We at Microsoft think about bots as somewhat "intelligent", as in - they understand your intent. There's a little example chat with a pizza bot: It's a subtle difference, but being able to have a conversation vs navigating a flow chart is pretty powerful for a bunch of applications.
Hey pizza bot!
> Hey Jeremy! The usual tonight?
Nah, I'd like to try something new
> We have added three new items:
> 1) Hawaiian
> 2) BBQ
> 3) The Works
Option 3 please.
> Shall I send this to your home?