Sure, I can help you find a taxi. First I need a specific location the taxi will pick you up at. What day will you be travelling and is there a certain time you would like to leave?
I need a taxi to pick us up in centre at 11:45 Im sorry, my wife was confused on what we were doing, disregard that last request. I really need a train from cambridge to leicester I would like to leave on Wednesday. I am open on what time to leave, however, I need to be there by 21:00.
{"__type": "Request", "service": "train", "values": ["day", "leave at"]}
{"__type": "Inform", "entity": {"__type": "Train", "leave at": "5:21"}}
The first train leaves at 5:21.