user_query: create a grocery list and add tuna, salmon, pork and beef 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: please take tuna off the list
response_text: I couldn't find tuna.
User: Terminate recording pushups with Google Fit, make that Fitbit.
Parse: Stop_exercise ( activity « pushups » provider « Fitbit » )