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: Take a black and white picture with a 3 second delay.
Parse: Take_photo ( delay « 3 second » filter « black and white » )