There are many trains that meet that requirement. Where are you headed? When would you like to depart? You can select any hour between 05:01 and 18:01.
Hi, I need a train Wednesday that will arrive by 19:45. I'm headed from Cambridge to Broxbourne. I don't care about that, you choose for me. Can you book me tickets?
{"__type": "Request", "service": "train", "values": ["leave at"]}
{"__type": "Inform", "entity": {"__type": "Train", "arrive by": "10:01", "departure": "cambridge", "destination": "Broxbourne", "leave at": "9:01", "trainid": "TR3279"}} {"__type": "Confirm", "entity": {"__type": "Train"}}
Train TR3279 departs cambridge at 9:01 and arrives in Broxbourne at 10:01. Would you like me to book you a ticket?