I have 202 trains departing from Cambridge. Where are you headed and when do you need to arrive?
I'm looking for a train that departs from Cambridge on Sunday. I need to go to Broxbourne, and I need to leave after 13:45.
{"__type": "Inform", "entity": {"__type": "Train", "choice": "202", "departure": "Cambridge"}} {"__type": "Request", "service": "train", "values": ["arrive by", "destination"]}
{"__type": "Inform", "entity": {"__type": "Train", "leave at": "14:01", "trainid": "TR9291"}} {"__type": "Confirm", "entity": {"__type": "Train"}}
TR9291 leaves at 14:01, shall I book you?