Does anyone know if it's possible to return a different message etc to the chat user if it's the very first time they are interacting with the bot?
For instance, if a user says "hello" (or anything) for the very first time, the bot might respond with, "Hello there!"
If a user says hello some time later, the bot might respond with "Hello, again!"
Looking through the developer docs I'm struggling to find an answer: https://developers.facebook.com/docs/messenger-platform
For context, I'm also using the https://api.ai service.