Multi-turn user requests:
user: It's a lazy Sunday morning and I'm getting ready for a drive. Before setting off, I want to make sure all the car doors are locked tight. Would you be able to check the door locks and ensure they're secured if any are unlocked?
user: I'm feeling a bit adventurous today, so I've decided to start the engine and hit the road. Can you confirm everything's all set and start the car?
user: I'm curious about the distance from Silverpine to Oakendale before I head out. Would you mind estimating how far I'll be traveling?

Tools involved: VehicleControlAPI
MathAPI
Expected function-call sequence: VehicleControlAPI.displayCarStatus
VehicleControlAPI.lockDoors
VehicleControlAPI.startEngine
VehicleControlAPI.get_zipcode_based_on_city
VehicleControlAPI.estimate_distance
MathAPI.logarithm