user_query: add candles 
response_text: OK, I added candles.
user_query: add item second on shopping list 
response_text: What do you want to add?
user_query: Add item second on list 
response_text: Alright. Which list do you want to add to?
User: Please cancel, um cancel my Uber ride that's coming in 15 minutes.
Parse: Cancel_ride ( pickup_time « in 15 minutes » provider « Uber » )