user_query: Check off exercise from that list
response_text: Which list?
user_query: yeah
response_text: Alright, I made a list called "Must Do" and added those two things.
user_query: Add exercise and yoga in Must Do list
response_text: I couldn't find a list called "Must Do." Do you want me to make one?
User: Buy tickets to Lady Gaga
Parse: BuyEventTickets ( event_performer « Lady Gaga » )