I need a train for Tuesday that will leave at 2:15.
{"__type": "Inform", "entity": {"__type": "Train", "choice": "828"}} {"__type": "Request", "service": "train", "values": ["arrive by", "departure", "destination", "leave at"]}
there are 2,828 trains with you description, would you kindly specify where it is you are going where from and time