user_query: Could you create a list for me named Costco
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: Add pears and bananas
response_text: Got it, what do you want to call it?
user_query: paper plates and plastic utensils
response_text: Sorry, I didn't get that. What do you want to call that list?
user_query: frozen berries
response_text: OK, I made a list called "Frozen Berries" and added those two things.
user_query: Replace frozen berries with smoothie miz
response_text: Alright, what do you want to call it?
User: Show me what i paid last month for gas, no I mean storage.
Parse: Get_bill ( account_type « storage » billing_date_span « last month » )