But what if user has a choice between multiple (let's say 5) service options, and if he choose something he will lose interest in during conversation he might want to go back to the choice card at the middle of the way. I was wondering if it's possible to make it so if user manually type something like 'bring me back' it will bring him to the previous card, and it might be possible with intents, but I still didn't figure out how intents work.