An Alexa skill may ask a user a Yes/No question and the response handled by request handlers for the built-in AMAZON.YesIntent and AMAZON.NoIntent intents. (This is different than dialog confirmation where Yes/No confirmation is handled by the dialog.)
It’s easy to setup these intents and their respective intent handlers. Just like any intent, declare them in the interaction model:
{
"name": "AMAZON.YesIntent",
"samples": []
},
{