Alexa actions - add a task

I have I use Kanboard to manage my daily task across multiple categories. I would like to use actionable notification to walk through adding a task. I simple routine in alexa would trigger a HA switch that would call the actionable notification. I am struggling with adding a intent that is essentially any phrase. Its similar to the example in the github for alexa actions. but there is one more step where it ask for the actual task.

So I guess my question, are alexa action always pre determine by the intent, (yes, no, numeric, selection from), duration ) or can alexa ask for a task and just push out what ever the human response with.