user_query: add apples and grapes to my shopping list 
response_text: OK, I added those two things.
user_query: No display my shopping list 
response_text: You have two things on that list.
user_query: Bring up list contains cheese 
response_text: You have eleven lists. Which one do you want to know about?
User: I need to take a selfie, no a group photo please.
Parse: Take_photo ( instrument « group photo » )