What is your departure day and time?
Hello, I am looking for a train that is going to Cambridge from London Liverpool Street. I am leaving on Friday and would like to arrive by 8:00 please.
{"__type": "Request", "service": "train", "values": ["departure", "leave at"]}
{"__type": "Inform", "entity": {"__type": "Train", "arrive by": "7:07", "trainid": "TR8522"}} {"__type": "Confirm", "entity": {"__type": "Train"}}
Sure. we have a train which arrives at 7:07 train id TR8522. Shall I book it?