Ok. And where will you be departing from? What time would you like to leave?
I need a train going to london liverpool street. I will be departing from Cambridge on Saturday. I don't have a departure time but I want to arrive by 16:45.
{"__type": "Request", "service": "train", "values": ["leave at"]}
{"__type": "Inform", "entity": {"__type": "Train", "leave at": "05:59", "trainid": "TR2895"}}
How about TR2895? It leaves at 05:59.