user_query: Add Blade to the list.
response_text: Alright. Which list do you want to add to?
user_query: Music
response_text: OK. Which list do you want to add to?
user_query: Music
response_text: OK. Which list do you want to add to?
user_query: Music list
response_text: What do you want to add?
user_query: Blade
response_text: OK, I added Blade.
User: I would like to pay the full amount for my um orthodontist bill.
Parse: Pay_bill ( payment_amount « full amount » service_type « orthodontist » )