user_query: onion, chili
response_text: OK, I added onion, chili.
user_query: Groceries
response_text: What do you want to add?
user_query: Please include some items on my initial list.
response_text: Alright. Which list do you want to add to?
User: Start tracking my uh tracking my agility exercise.
Parse: Start_exercise ( activity « agility » )