scheduling a AWS lex intent as push notification.

Question

Hai There,

i have a requirement to schedule a lex intent with pinpoint push notification.
consider this example everyday morning at 9 AM i would like to send a push notification to some users for a survey which will have some questions to answer which is a lex and lambda integration.

currently i am able to work with lex by calling the utterance, but what i want to achieve is connect to lex without user calling the utterance. we can think of it like a bot first kinda conversation.

Thanks for the help in advance,
charith v.

Answer

In order to start a conversation without specific user input you can leverage [PutSession API](https://docs.aws.amazon.com/lexv2/latest/dg/API_runtime_PutSession.html). PutSession API creates a new session or modifies an existing session. In this case if you have ability to make a PutSession call as soon as the user clicks on notification that might be a possible approach for you.

PutSession API is supported both in Lex V1 and Lex V2. In Lex V2 to achieve this, you can set the intent in session state and Lex will respond with appropriate next response. You can then play/print that response back to the user continuing subsequent conversation from that point.

Example PutSession Input:

```
{
    "sessionState": {
        "dialogAction": {
            "type": "Delegate"
        },
        "intent": {
            "name": "BookCar"
        }
    }
}
```
In this case I am setting 'BookCar' as the current intent and Delegating the next step to Lex. In response header I get the bot response as ```x-amz-lex-messages```

scheduling a AWS lex intent as push notification.

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