Sample code for the blog post Handling Action’s No Match errors in Dialogflow: Three strikes and you’re out

index.js

// Copyright 2018, Google, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

'use strict';

const {dialogflow} = require('actions-on-google');
const functions = require('firebase-functions');

const app = dialogflow({debug: true});

// Map the intent 'Default Fallback Intent' from the Dialogflow agent to this function.
app.intent('Default Fallback Intent', (conv) => {
  // 'ticketCount' holds the count of how many tickets are left for the
  // requested event. In this sample, ‘ticketCount’ has a fixed value of 17,
  // but in a real application, you need to obtain the actual ticket count from 
  // the ticketing service via API and assign the value to ‘ticketCount’.
  const ticketCount = 17;
  // If 'fallbackCount' doesn't exist, create it and set the value to 0.
  if (!conv.data.fallbackCount) {
    conv.data.fallbackCount = 0;
  }
  // Increment the value of 'fallbackCount'.
  conv.data.fallbackCount++;
  // Adjust the fallback response according to the error count.
  if (conv.data.fallbackCount === 1) {
    return conv.ask('Sorry, how many was that?');
  } else if (conv.data.fallbackCount === 2) {
    return conv.ask(`Sorry, I didn't get it. How many tickets would you like to purchase?`);  
  } else {
    // If 'fallbackCount' is greater than 2, send out the final message and terminate the conversation.
    return conv.close(`This seems like beyond my expertise. Let’s stop here. There are currently ${ ticketCount } seats available. Bye for now.`);
  }
});

// Required by Firebase
exports.dialogflowFirebaseFulfillment = functions.https.onRequest(app);

I have tried the above fallback intent but it doesn't work on my end.

Does changing the language within the fulfillment make the code broke?

I use bahasa indonesia inside the (sorry)