user_query: add item on that list
response_text: Got it. Which list do you want to add to?
user_query: bread and coke
response_text: Alright. Which list do you want to add to?
user_query: breading
response_text: I couldn't find a list called "Breading." Do you want me to make one?
user_query: yes
response_text: Alright, I made a list called "Breading" and added bread and coke.
user_query: Remove all items to my breading list
response_text: What do you want to add?
User: Begin tracking my walk, no, run.
Parse: Start_exercise ( activity « run » )