user_query: Create a shopping list and add footwear, sandals to the list
response_text: Sorry, it looks like you already have a list with that name. Do you still want to make a new one?
user_query: yes
response_text: Alright, I made a list called "Shopping" and added those two things.
user_query: remove both items from this list
response_text: Are you sure you want to go ahead and clear it?
user_query: shopping list
response_text: You have three lists with similar names. Which one do you want to know about?
user_query: shopping list with sandals
response_text: You have two things on that list.
User: Pay off my Visa, no make that my Mastercard, for last month.
Parse: Pay_bill ( billing_date_span « last month » card_company « Mastercard » )