I would like to guide the user to the possibilities by a two levels of multichoice button lists.
This is a perfect scenario for a combination of choice prompt and suggested actions. Create a choice prompt for the first (before, doing, after). Then, add a switch branch, then handle each choice with Suggested actions. I just tested this and it looked like what you want:
Here is what the sent a response activity looks like (using a structured response of Suggested Actions):
[Activity
Text = Please pick one
SuggestedActions = intent1 | intent2 | intent3 | intent4 | intent5 | intent6 | intent7 | intent8 | intent9 | intent10
]
I want the possibility of write the doubt at the beginning.
I'm not sure what you mean by this. Does the above accomplish what you need?
My problem is that, since I have no intents for "before", "doing" and "after", so Luis do not predict it.
That is fine. Those aren't true intents anyhow. Like I said; choice prompt and suggested actions are a great solution.