And what day would you like to travel on?
I need a train from Cambridge to Ely. I would like to leave on Monday.
{"__type": "Request", "service": "train", "values": ["day"]}
{"__type": "Inform", "entity": {"__type": "Train", "leave at": "05:50", "trainid": "TR2013"}} {"__type": "Confirm", "entity": {"__type": "Train"}}
TR2013 leaves at 05:50, should i book it for you?