user_query: create a grocery list and add potato, cabbage, squash, carrots, beans 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 four things.
User: I'm starting my run now.
Parse: Start_exercise ( activity « run » )