There are multiple trains making that trip. What day are you making that trip?
I want to book a train from birmingham new street and go to cambridge. I am making the trip on Saturday and would need to arrive by 18:45.
{"__type": "Inform", "entity": {"__type": "Train", "choice": "multiple"}} {"__type": "Request", "service": "train", "values": ["day"]}
{"__type": "Inform", "entity": {"__type": "Train", "arrive by": "18:23", "destination": "Cambridge", "trainid": "TR1283"}} {"__type": "Confirm", "entity": {"__type": "Train"}}
TR1283 will arrive in Cambridge at 18:23. Will that work for you?