user_query: create a shopping list
response_text: Sorry, it looks like you already have a list with that name. Do you still want to make a new one?
user_query: shopping for holiday
response_text: OK, I made a list called "Shopping For Holiday".
user_query: add beverage
response_text: OK, what do you want to call it?
user_query: add beverage to "Shopping For Holiday"
response_text: Sorry, it looks like you already have a list with that name. Do you still want to make a new one?
user_query: no
response_text: No problem, nothing's been changed.
User: Order a ride arriving at Osnabrück at 13 Uhr.
Parse: Order_ride ( dropoff_location « Osnabrück » dropoff_time « 13 Uhr » )