user_query: create a meat list
response_text: Sure, I made a list called "Meat".
user_query: add lamp
response_text: OK. Lamp on your list called "Meat". Anything else?
user_query: chicken
response_text: OK. Chicken. Anything else?
user_query: Delete all items on Meat
response_text: You have eleven lists. Which one do you want to clear?
User: Could you launch a Peloton session on my phone?
Parse: Start_exercise ( device « phone » provider « Peloton » )