user_query: Make a list and put onions and bread on it
response_text: OK, what do you want to call it?
user_query: Shopping
response_text: OK, I made a list called "Shopping" and added those two things.
User: Pay off $50.00, no, $60.00 for my credit card today.
Parse: Pay_bill ( payment_amount « $60.00 » service_type « credit card » time « today » )