Read back the Number entered while user is prompted for the number inside Amazon Connect not the Lex Bot

These steps might work for you:

1. In Amazon Connect:

   • Create a Get Customer Input block in your contact flow.
   • Configure this block to prompt the customer for the 6-digit registration number.
   • Set the input type to "DTMF" (Dual-Tone Multi-Frequency) or "Customer Input" to accept touch-tone or voice input, respectively.
   • Store the collected input in a session attribute, let's say registrationNumber.

2. In Amazon Lex:

   • Create a new intent or use an existing one to handle the pin input.
   • Configure a slot named pinCode with the following settings:
     • Slot type: AMAZON.FOUR_DIGIT_NUMBER
     • Prompt: "Please enter your 4-digit PIN."
   • In the intent's fulfillment lambda function or code hook, you can access the registrationNumber from the Connect session attributes.

3. Connect the Amazon Connect flow to Lex:

   • After collecting the registration number in Connect, invoke the Lex bot and pass the registrationNumber session attribute to Lex using the SessionAttributes parameter.
   • Lex will prompt the user for the PIN using the configured slot prompt.

4. Read back the input:

   • In the Lex bot's fulfillment function, you can access the pinCode slot value and the registrationNumber session attribute.
   • Use Amazon Polly or a Text-to-Speech (TTS) service to read back the registration number and PIN to the customer.

Here's a high-level pseudocode for the Lex bot's fulfillment function:

def lambda_handler(event, context):
    # Get the registration number from the Connect session attributes
    registration_number = event['sessionAttributes']['registrationNumber']

    # Get the PIN from the Lex slot
    pin_code = event['currentIntent']['slots']['pinCode']

    # Read back the registration number and PIN using a TTS service
    read_back_text = f"Your registration number is {registration_number}, and your PIN is {pin_code}."
    tts_response = use_tts_service(read_back_text)

    # Return the TTS response to be played back to the customer
    return {
        'sessionAttributes': event['sessionAttributes'],
        'dialogAction': {
            'type': 'PlayAudio',
            'audioData': tts_response
        }
    }

Note: You'll need to replace use_tts_service with the actual code to interact with your chosen TTS service (e.g., Amazon Polly, Google Cloud Text-to-Speech, or others).