Okay, what is your destination?
Hello, I'm trying to find a train from Cambridge that arrives by 20:30. My destination is stansted airport.
{"__type": "Request", "service": "train", "values": ["destination"]}
{"__type": "Request", "service": "train", "values": ["day", "leave at"]}
Great, what day would you like your train for? Also, would you like to leave by a certain time?