Where are you departing from?
I need to find a train departing on Sunday that is going to Cambridge. I am departing from leicester.
{"__type": "Request", "service": "train", "values": ["departure"]}
{"__type": "Inform", "entity": {"__type": "Train", "choice": "19", "day": "Sunday"}} {"__type": "Request", "service": "train", "values": ["leave at"]}
We have 19 different trains along that route for Sunday. Do you have a specific time in mind?