From which departure site, please?
Find a train to leicester that arrives by 21:00. The train will be leaving Cambridge on Thursday.
{"__type": "Request", "service": "train", "values": ["departure"]}
{"__type": "Inform", "entity": {"__type": "Train", "choice": "14", "leave at": "latest leaves at 18:21"}} {"__type": "Confirm", "entity": {"__type": "Train"}}
There are 14 trains that fit your needs. The first leaves at 5:21 and the latest leaves at 18:21. Would you like me to get a ticket for you?