Dialogflow 未检测到“退出对话”意图

Question

I'm trying to override the default answers for the not-deleteable "exit intent" that Dialogflow provides . This intent is not visible in the intent list of my agent but according to the documentation and to empiric evidence, it's there. The question is:

How do I override its default answers?

My exit intent is called "Exit conversation".

1. I tried using the event 'actions_intent_CANCEL' that the docs provide, but it doesn't seem to work. Image. Intent name and Events.
2. I have set the intent as 'end of conversation' in the Dialogflow Console. Image. Responses.
3. I have enabled the webhook call for that intent, and connected the webhook to a function that closes the conversation with the same answer that I set up in the Responses field of the Intent Console. Image. Function

Additional images:

Image. Training phrases. It's in spanish:) but it basically says "cancel", "i dont want to continue", etc.

Image. Actions and parameters.

The thing is, it is not always even recognizing MY intent. Depending on the current flow situation, it sometimes goes to the default intent, sometimes goes to mine. When I type 'cancel'/'cancelar' it does not always detect my "Exit conversation" intent, it stays in the current intent and closes the conversation with the default exit Dialogflow intent: 'Ok, cancelled.' or something like that. It sometimes gets mine, though, and gives my answer, but its seems to do so in an unpredictable way.

What should I do?

Answer 1

Does Dialogflow have a default Exit Intent?

Not necessarily. There is a default Cancel Intent (which is the same thing) when using Actions on Google, but this doesn't show up in Dialogflow as an Intent. It shows up as an Event.

The table on the page you referred to shows the Intent name, but this is only available if you're working with Actions on Google v2 directly. The third column shows the Event name that it appears as in Dialogflow.

So why does it seem to exit if I say "exit" or "cancel"?

This is handled by the Assistant before it hits Dialogflow by default. So there isn't a "hidden" Dialogflow Intent that handles it.

You need to specifically create your own Intent to handle it if you want.

That sounds like it is splitting hairs. But ok, how?

You can opt into cancel events in Dialogflow by

1. Creating a new Intent. (You can name it whatever you want, but something like "End Conversation" or "quit.event" is typical.)
2. Set the Event field to "actions_intent_CANCEL".
3. You can then set responses, set webhooks, etc, just like you would for other events. You should probably also set the "Ends Conversation" checkbox, but if you don't, it will end anyway.

But I did that? Why does it only work sometimes?

Your description suggested that you included training phrases in your "Exit Conversation" Intent.

For any Intent in Dialogflow, you should provide either training phrases or an Event, but not both. By providing both, you may be confusing Dialogflow.

So how do I add additional phrases that should be used to quit?

Make a second Intent with the other training phrases and without the Event. I usually call it something like "quit", so it is in the list near the other Intent.

So I need two Intents? How can I handle that in my code? Doesn't that mean I need twice as much code?

Remember that Intents represent what the user says or does and not how you handle it.

I typically handle everything in a webhook and set the Action string to the same thing for both. The webhook library I use, multivocal , can determine how to handle things base on that Action string. (Other libraries don't use this field, and you don't need to set it if your library doesn't use it.)

If you're using the Dialogflow library (and it looks like you are) for your webhook, you can just have both Intent names call the same handler function. It might look something like this:

function exitConversation( agent ){
  console.log( "Cancelled" );
  agent.end( "Goodbye" );
}
let intentMap = new Map();
intentMap.set( "quit.event", exitConversation );
intentMap.set( "quit", exitConversation );