There are 1414 trains, what destination do you have in mind? What day did you have in mind?
I'm looking for a train that leaves from Cambridge. I'd like to go to Broxbourne and arrive by 21:30. I would like to leave on Tuesday and book travel for 8 people. I will also need the reference number.
{"__type": "Request", "service": "train", "values": ["day"]}
{"__type": "NotifySuccess", "service": "train", "entity": {"__type": "Train", "arrive by": "21:01", "book people": "8", "ref": "4N4R9KBI"}} {"__type": "RequestAlternatives"}
I've booked 8 tickets for you on the train arriving at 21:01. Your reference number is 4N4R9KBI . Can I help you with anything else today?