Yes, I need to know where you are leaving from and what city you will be going to? Great. What day and time do you want to travel?
Yes, could you give me some information on a train? I'm leaving from bishops stortford and going to cambridge please. I would like to leave on Firday after 16:00. Can you provide me with the arrival time?
{"__type": "Request", "service": "train", "values": ["day", "leave at"]}
{"__type": "Inform", "entity": {"__type": "Train", "arrive by": "16:07", "leave at": "15:29"}}
Yes I have a train that leaves at 15:29 and arrives at 16:07.