Multi-turn user requests:
user: Ensure the fuel tank is replenished adequately by adding 38 liters of gasoline so that we're well-prepared for the lengthy voyage ahead. Only fill with interger amount for volumn; round when not integer. Once fueled, proceed to start the engine confidently with the ignition mode, and make certain that all doors are secure, and the parking brake is engaged as a safety measure.
user: As we gear up for our adventure, it’s wise to confirm that each tire is inflated to a stable 32 PSI. Should any of the tires fall short, chart a course to the nearest tire service center to have this rectified.

Tools involved: VehicleControlAPI
Expected function-call sequence: VehicleControlAPI.liter_to_gallon
VehicleControlAPI.fillFuelTank
VehicleControlAPI.startEngine
VehicleControlAPI.check_tire_pressure
VehicleControlAPI.find_nearest_tire_shop
VehicleControlAPI.set_navigation