I would be happy to help you find a train. Where are you departing from?
Howdy, I need a train heading into cambridge. I am departing from norwich. I need to leave after 18:45 on Wednesday.
{"__type": "Request", "service": "train", "values": ["departure"]}
{"__type": "Request", "service": "train", "values": ["destination"]}
I have several options for you. Where is your destination?