Multi-turn user requests:
user: Would you be able to increase my current fuel reserve?
user: The new fuel reserve size should be twice its current size.
user: Since we've topped up the fuel, let's ignite the engine and assess the battery's condition for our journey.
user: Verify the tire pressure to guarantee they're accurately inflated for our lengthy expedition.
user: I need to inform my friend (with id 'USR002') about the road trip itinerary; please dispatch them a note saying 'Road trip itinerary update.'.
user: Simultaneously, might you present all my incoming messages so I can prioritize any that demand immediate attention?

Involved API classes: MessageAPI
VehicleControlAPI

Initial environment state:
VehicleControlAPI: fuelLevel: 10
batteryVoltage: 12.6
engineState: stopped
doorStatus: driver: unlocked
passenger: unlocked
rear_left: unlocked
rear_right: unlocked
acTemperature: 25
fanSpeed: 50
acMode: auto
humidityLevel: 50
headLightStatus: off
brakeStatus: released
brakeForce: 0
slopeAngle: 0
distanceToNextVehicle: 50
cruiseStatus: inactive
destination: None
frontLeftTirePressure: 32
frontRightTirePressure: 32
rearLeftTirePressure: 30
rearRightTirePressure: 30
MessageAPI: workspace_id: WS123456
user_count: 4
user_map: Michael: USR005
Sarah: USR006
David: USR007
Emma: USR008
messages_sent_map: USR005: USR006: Hey Sarah, are you ready for the trip?
USR006: USR007: Can you bring the maps?
USR008: Don't forget the snacks!
USR007: USR006: I'll be there soon.
USR008: USR006: Got the snacks!
messages_inbox_map: USR006: USR005: Hey Sarah, are you ready for the trip?
USR007: I'll be there soon.
USR008: Got the snacks!
USR007: USR006: Can you bring the maps?
USR008: USR006: Don't forget the snacks!
message_count: 0
current_user: USR005

Ground-truth function call path:
VehicleControlAPI.displayCarStatus
VehicleControlAPI.fillFuelTank
VehicleControlAPI.startEngine
VehicleControlAPI.check_tire_pressure
MessageAPI.send_message
MessageAPI.view_messages_received
MessageAPI.delete_message

Functions held out until the model asks (by turn index):
3: activateParkingBrake