user_query: modify list entries in book wishlist
response_text: I couldn't find a list called "Book Wishlist."
user_query: make list called book wishlist
response_text: Sure, I made a list called "Book Wishlist".
user_query: add harry potter and fault in our stars to book wishlist
response_text: Sure. Those two things on your list called "Book Wishlist". Anything else?
user_query: update an item in my book wishlist
response_text: Sure. Update an item in my book wishlist. Anything else?
user_query: update an item inside my book wishlist
response_text: Update an item inside my book wishlist. Got it. What else?
User: Pay last month's um water bill.
Parse: Get_bill ( account_type « water » billing_date_span « last month » )