Okay, where you are leaving and where are you going?
Hello, I'd like a train on Sunday that arrives by 16:30. Can you help? I should leave on Sunday and arrive by 16:30, from cambridge to stevenage.
{"__type": "Request", "service": "train", "values": ["departure", "destination"]}
{"__type": "Inform", "entity": {"__type": "Train", "arrive by": "16:10", "leave at": "15:21"}} {"__type": "RequestAlternatives"}
There's a train leaving at 15:21 and gets in at 16:10. Will this work for you?