When transporting an elderly passenger with mobility difficulties or a passenger carrying heavy luggage, what is the driver's expected professional service conduct?

1. Sit in the driver's seat and honk the horn repeatedly to make them hurry
2. Take the initiative to step out, assist with loading/unloading luggage in the trunk, and help the passenger board/alight safely
3. Refuse the order immediately and drive away
4. Demand an extra cash tip of RMB 50 per suitcase before opening the trunk