Okay then I’m not sure I understand your query. The method given there allows one to extract user input at a given point in a story no matter the intent, assuming one has gotten to that point in the story which is of course intent based.
I have used this, for example, when asking for a reference number during a modify_booking intent question. Rather than write a whole form, you can have
- utter_ask_ref
- action_listen
- action_get_ref
This action_get_ref simply takes whatever the response the user gives during action_listen and shoves it in a slot which is parsed later on, is this not what you are asking about? I am assuming you are using Core here and so to get anywhere with Core you will of course need intents and so on otherwise the stories don’t make much sense.
Did that make sense/help?