I can definitely help with that - what time would you like to leave and/or arrive? Great. And can you tell me where you'd like to be picked up from?
I need a tax to curry garden. I need to arrive by 19:00. i need to leave from archway house.
{"__type": "Request", "service": "taxi", "values": ["departure"]}
{"__type": "Request", "service": "taxi", "values": ["leave at"]}
Okay, what time would you like to leave?