user_query: create a sport list
response_text: OK, I made a list called "Sport".
user_query: add soccer
response_text: Sure. Soccer on your list called "Sport". Anything else?
user_query: tennis
response_text: Sure. Tennis. Anything else?
User: Let's pay my T-Mobile bill, I mean my AT&T bill.
Parse: Pay_bill ( account_provider « AT&T » )