user_query: add water to my grocery list
response_text: Got it, I added water.
user_query: don't add water, but put juice on the grocery list
response_text: I couldn't find that item on your list called "grocery."
user_query: add water
response_text: Alright. Which list do you want to add to?
User: Schedule me a Lyft for tonight at 7 no at 8 pm.
Parse: Order_ride ( pickup_time « 8 pm » provider « Lyft » )