index.js

// This sample demonstrates handling intents from an Alexa skill using the Alexa Skills Kit SDK (v2).
// Please visit https://alexa.design/cookbook for additional examples on implementing slots, dialog management,
// session persistence, api calls, and more.
const Alexa = require('ask-sdk-core');

const LaunchRequestHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'LaunchRequest';
    },
    handle(handlerInput) {
        const speakOutput = 'Welcome to Conference Buddy. How can I be of assistance?';
        return handlerInput.responseBuilder
            .speak(speakOutput)
            .reprompt(speakOutput)
            .getResponse();
    }
};
const HelloWorldIntentHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'HelloWorldIntent';
    },
    handle(handlerInput) {
        const speakOutput = 'Cześć! How can I help?';
        return handlerInput.responseBuilder
            .speak(speakOutput)
            .reprompt('I did not get that, how can I help?')
            .getResponse();
    }
};

const GetNextTalkIntentHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'GetNextTalk';
    },
    handle(handlerInput) {
        // put API call to the conference service
        const speakOutput = 'The next talk is going to be by John Smith, covering Alexa';
        return handlerInput.responseBuilder
            .speak(speakOutput)
            .reprompt('I did not get that, how can I help?')
            .getResponse();
    }
};

const RespondSurveyIntentHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'RespondSurveyIntent';
    },
    handle(handlerInput) {
        // put API call to the conference service
        const speakOutput = 'Thanks for your feedback, your rating was an average of: ';
        return handlerInput.responseBuilder
            .speak(speakOutput)
            .reprompt('I did not get that, how can I help?')
            .getResponse();
    }
};

const HelpIntentHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'AMAZON.HelpIntent';
    },
    handle(handlerInput) {
        const speakOutput = 'You can say hello to me! How can I help?';

        return handlerInput.responseBuilder
            .speak(speakOutput)
            .reprompt(speakOutput)
            .getResponse();
    }
};
const CancelAndStopIntentHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && (Alexa.getIntentName(handlerInput.requestEnvelope) === 'AMAZON.CancelIntent'
                || Alexa.getIntentName(handlerInput.requestEnvelope) === 'AMAZON.StopIntent');
    },
    handle(handlerInput) {
        const speakOutput = 'Goodbye!';
        return handlerInput.responseBuilder
            .speak(speakOutput)
            .getResponse();
    }
};
const SessionEndedRequestHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'SessionEndedRequest';
    },
    handle(handlerInput) {
        // Any cleanup logic goes here.
        return handlerInput.responseBuilder.getResponse();
    }
};

// The intent reflector is used for interaction model testing and debugging.
// It will simply repeat the intent the user said. You can create custom handlers
// for your intents by defining them above, then also adding them to the request
// handler chain below.
const IntentReflectorHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest';
    },
    handle(handlerInput) {
        const intentName = Alexa.getIntentName(handlerInput.requestEnvelope);
        const speakOutput = `You just triggered ${intentName}`;

        return handlerInput.responseBuilder
            .speak(speakOutput)
            //.reprompt('add a reprompt if you want to keep the session open for the user to respond')
            .getResponse();
    }
};

// Generic error handling to capture any syntax or routing errors. If you receive an error
// stating the request handler chain is not found, you have not implemented a handler for
// the intent being invoked or included it in the skill builder below.
const ErrorHandler = {
    canHandle() {
        return true;
    },
    handle(handlerInput, error) {
        console.log(`~~~~ Error handled: ${error.stack}`);
        const speakOutput = `Sorry, I had trouble doing what you asked. Please try again.`;

        return handlerInput.responseBuilder
            .speak(speakOutput)
            .reprompt(speakOutput)
            .getResponse();
    }
};

// The SkillBuilder acts as the entry point for your skill, routing all request and response
// payloads to the handlers above. Make sure any new handlers or interceptors you've
// defined are included below. The order matters - they're processed top to bottom.
exports.handler = Alexa.SkillBuilders.custom()
    .addRequestHandlers(
        LaunchRequestHandler,
        HelloWorldIntentHandler,
        GetNextTalkIntentHandler,
        RespondSurveyIntentHandler,
        HelpIntentHandler,
        CancelAndStopIntentHandler,
        SessionEndedRequestHandler,
        IntentReflectorHandler, // make sure IntentReflectorHandler is last so it doesn't override your custom intent handlers
    )
    .addErrorHandlers(
        ErrorHandler,
    )
    .lambda();

interaction-model.json

{
    "interactionModel": {
        "languageModel": {
            "invocationName": "conference buddy",
            "intents": [
                {
                    "name": "AMAZON.CancelIntent",
                    "samples": []
                },
                {
                    "name": "AMAZON.HelpIntent",
                    "samples": []
                },
                {
                    "name": "AMAZON.StopIntent",
                    "samples": []
                },
                {
                    "name": "HelloWorldIntent",
                    "slots": [],
                    "samples": [
                        "hello",
                        "how are you",
                        "say hi world",
                        "say hi",
                        "hi",
                        "say hello world",
                        "say hello"
                    ]
                },
                {
                    "name": "AMAZON.NavigateHomeIntent",
                    "samples": []
                },
                {
                    "name": "RespondSurveyIntent",
                    "slots": [
                        {
                            "name": "answerA",
                            "type": "AMAZON.NUMBER",
                            "samples": [
                                "{answerA}"
                            ]
                        },
                        {
                            "name": "answerB",
                            "type": "AMAZON.NUMBER",
                            "samples": [
                                "{answerB}"
                            ]
                        },
                        {
                            "name": "answerC",
                            "type": "AMAZON.NUMBER",
                            "samples": [
                                "{answerC}"
                            ]
                        }
                    ],
                    "samples": [
                        "open the survey",
                        "i would like to take a part in this survey",
                        "i want to give feedback",
                        "start the survey"
                    ]
                },
                {
                    "name": "GetNextTalk",
                    "slots": [],
                    "samples": [
                        "what's next",
                        "who is the next speaker",
                        "what is the next talk"
                    ]
                }
            ],
            "types": []
        },
        "dialog": {
            "intents": [
                {
                    "name": "RespondSurveyIntent",
                    "confirmationRequired": false,
                    "prompts": {},
                    "slots": [
                        {
                            "name": "answerA",
                            "type": "AMAZON.NUMBER",
                            "confirmationRequired": false,
                            "elicitationRequired": true,
                            "prompts": {
                                "elicitation": "Elicit.Slot.817823842422.409695866204"
                            }
                        },
                        {
                            "name": "answerB",
                            "type": "AMAZON.NUMBER",
                            "confirmationRequired": false,
                            "elicitationRequired": true,
                            "prompts": {
                                "elicitation": "Elicit.Slot.817823842422.645072295927"
                            }
                        },
                        {
                            "name": "answerC",
                            "type": "AMAZON.NUMBER",
                            "confirmationRequired": false,
                            "elicitationRequired": true,
                            "prompts": {
                                "elicitation": "Elicit.Slot.817823842422.464203815335"
                            }
                        }
                    ]
                }
            ],
            "delegationStrategy": "ALWAYS"
        },
        "prompts": [
            {
                "id": "Elicit.Slot.817823842422.409695866204",
                "variations": [
                    {
                        "type": "PlainText",
                        "value": "From one to ten, how would you rate the quality of the talks?"
                    }
                ]
            },
            {
                "id": "Elicit.Slot.817823842422.645072295927",
                "variations": [
                    {
                        "type": "PlainText",
                        "value": "From one to ten, how would you rate the quality of the food?"
                    }
                ]
            },
            {
                "id": "Elicit.Slot.817823842422.464203815335",
                "variations": [
                    {
                        "type": "PlainText",
                        "value": "From one to ten, how would you rate the quality of the event overall?"
                    }
                ]
            }
        ]
    }
}