Multi-turn user requests:
user: Estimate the distance between two cities. Afterwards, fill the tank with 40 liters of gasoline for my quick trip.
user: The cities are San Francisco and Rivermist.
user: Preparations are complete. Start the engine so I can tweet about this journey containing message 'Just started my journey!' with #RoadTrip and @carenthusiast.

Ground-truth function call sequence:
VehicleControlAPI.liter_to_gallon
VehicleControlAPI.fillFuelTank
VehicleControlAPI.startEngine
VehicleControlAPI.get_zipcode_based_on_city
VehicleControlAPI.estimate_distance
TwitterAPI.post_tweet