What time would you like to depart?
I'd like to book a taxi to depart from Maharajah Tandoori Restaurant. I would like the taxi to be here by 02:00.
{"__type": "Request", "service": "taxi", "values": ["leave at"]}
{"__type": "Request", "service": "taxi", "values": ["destination"]}
Where would you like the taxi to take you?