There are 202 trains to cambridge on friday. What is your departure station and preferred travel time?
I need a train to cambridge on friday, please. I would like for the train to leave after 18:45 and depart from bishops stortford
{"__type": "Inform", "entity": {"__type": "Train", "choice": "202", "day": "friday", "destination": "cambridge"}} {"__type": "Request", "service": "train", "values": ["departure", "leave at"]}
{"__type": "Inform", "entity": {"__type": "Train", "leave at": "19:29"}}
There is a train meeting your criteria and is leaving at 19:29.