Set user input as intent after button click

I’ll try it, not sure if I explained well my problem. My problem is that the bot don’t have any way to predict that :

 user: random ideas that comes to my mind

is an ideasmine intent, the bot will not know because I don’t know how what this intent will have as input; so I just have an intent called ideasmine but with random things.

Actualy my problem is exactly as @huberrom said. I thought I could use a button and after the user click on it I save the input as slot ideasmine and payload: \ideasmine