Where are you looking to depart from?
I need to what trains are leaving Friday evening. I'm leaving from Peterborough.
{"__type": "Request", "service": "train", "values": ["departure"]}
{"__type": "Inform", "entity": {"__type": "Train", "choice": "two trains an hour", "departure": "peterborough"}} {"__type": "Request", "service": "train", "values": ["leave at"]}
There are two trains an hour leaving peterborough all evening. Do you know what time you plan to leave?