Is it possible to link duckling output to intention? For example, if the user says “tomorrow”, duckling detects the time but my agent does not understand that the user’s intention is “inform”.
no you have to provide NLU training examples for this
Thank you 
. I have a follow up question.
Let’s say I have the following message : " Iwant to go to Paris with five people during ten days"
What I want to do is to fill slots “number_of_people” with “5” and “number_of_day” with “10”. I know that I can convert into number with duckling but I do not see how to fill the right slots with a custom action.
you’d have to either define custom entities, or do some regex checking in your custom action, for the presence of the word people and days