user_query: Do you have directions to a nearby train station
response_text: Alright, the best way to get from Mountain View to your current location by car is via South Shoreline Boulevard, and will take about thirteen minutes in moderate traffic.
User: add t-shirt to my shopping list
Parse: Add_item_to_list ( items « t-shirt » list_label « shopping » list_singular_or_plural « list » )