Article containing 19 tips/best practices for building chatbots. I wish I had read it years ago and hadn’t made a lot of mistakes such as relying on messenger features which aren’t supported across all the devices, not giving a user an ability to cancel or go back to the main menu at any moment of interaction and many more common and straightforward UX mistakes. “Must read”, especially for novice bot builders, it'll save you a ton of wasted time and energy :)

https://goo.gl/3rd7fk