user_query: create a grocery list and add celery, tomato, buns, ketchup, mayo to the list
response_text: Sorry, it looks like you already have a list with that name. Do you still want to make a new one?
user_query: yes
response_text: Alright, I made a list called "Grocery" and added those three things.
user_query: delete all list
response_text: You have eleven lists. Which one do you want to delete?
User: Could you help me cancel my taxi ride, I mean Uber ride?
Parse: Cancel_ride ( provider « Uber » )