check_demo.py

def check_demo(intent_request):
    caller_id = get_call_id(intent_request['sessionAttributes'])
    output_session_attributes = intent_request['sessionAttributes'] if intent_request[
                                                                           'sessionAttributes'] is not None else {}

    content = "Sorry, we couldn't find your Darius MLOps platform demo."
    if caller_id is not '':
        response = table.query(
            KeyConditionExpression=Key('phoneNumber').eq(caller_id)
        )
        if len(response['Items']) > 0:
            timeslot = response['Items'][0]['appointment']
            content = "You have a Darius demo with us at " + timeslot

    return close(
        output_session_attributes,
        'Fulfilled',
        {
            'contentType': 'PlainText',
            'content': content
        }
    )