user_query: Add milk and eggs to a new list
response_text: Alright, what do you want to call it?
user_query: lvoe
response_text: OK, I made a list called "Lvoe" and added those two things.
user_query: Update what my lvoe list is called
response_text: I couldn't find a list called "Love."
User: Begin 1 hour workout, no a half hour workout.
Parse: Start_exercise ( duration « half hour » )