Where will you be leaving from? What time would you like to depart or arrive at the destination?
I'm looking for a train to Cambridge on Sunday. Can you help me with this? I'm leaving from london kings cross. It should depart after 12:45.
{"__type": "Request", "service": "train", "values": ["arrive by", "leave at"]}
{"__type": "Inform", "entity": {"__type": "Train", "leave at": "13:17", "trainid": "TR1688"}} {"__type": "Confirm", "entity": {"__type": "Train"}}
TR1688 leaves at 13:17. Do you want to book?