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: Start a yoga session on Apple Watch, no, Runtastic.
Parse: Start_exercise ( activity « yoga » provider « Runtastic » )