user_query: check off 5 reams of copy paper
response_text: Which list?
user_query: add new tires
response_text: Got it, I added new tires.
user_query: open my walmart list
response_text: You have two things on that list.
User: Can I see the billing statement for November and December?
Parse: Get_bill ( billing_date_span « November and December » )