I'd be happy to help with that. What day and time are you traveling?
I am looking for a train going from Cambridge to stansted airport. The train needs to leave on Monday after 11:45.
{"__type": "Request", "service": "train", "values": ["day", "leave at"]}
{"__type": "Request", "service": "train", "values": ["arrive by"]}
Do you need to arrive by a certain time?