user_query: add oil change to list called to-do 
response_text: Got it, I added oil.
user_query: Remove go to store on list called to-do 
user_query: check off go to store on list called to-do 
response_text: OK, I checked off go to store.
user_query: add go to store on list called to-do  
response_text: Sure, I added go to store.
User: Get me an Uber at 7:30.
Parse: Order_ride ( pickup_time « 7:30 » provider « Uber » )