What day would like to leave and what is your preferred departure and arrival time?
I need to find a train going to London Kings Cross from Cambridge please. I will be leaving on Saturday.
{"__type": "Request", "service": "train", "values": ["arrive by", "day", "leave at"]}
{"__type": "Inform", "entity": {"__type": "Train", "choice": "10", "day": "Sunday"}} {"__type": "Request", "service": "train", "values": ["arrive by", "leave at"]}
I have 10 trains leaving on Sunday. What is your preferred departure and arrival times?