user_query: music list
response_text: What do you want to add?
user_query: music
response_text: Alright. Which list do you want to add to?
user_query: Add something to the list with metallica
response_text: OK. Which list do you want to add to?
User: Can you stop please stop the treadmill workout.
Parse: Stop_exercise ( activity « treadmill » )