user_query: display my shopping list 
response_text: You have two things on that list.
user_query: I want to add items to my shopping list 
response_text: What do you want to add?
user_query: I want to add to my shopping list 
response_text: What do you want to add?
User: Can you check on order number 474846374 from Target?
Parse: Check_order_status ( commercial_provider « Target » order_number « 474846374 » )