The four main duties of a steward (typically referring to a flight attendant or maritime steward) center on Safety, Service, Security, and Comfort. First, their primary responsibility is Safety Management, which involves conducting pre-flight/pre-voyage checks, demonstrating emergency procedures, and ensuring all safety equipment is functional. Second is Passenger Service, encompassing the distribution of meals and beverages and responding to specific passenger requests. Third is Cabin/Deck Maintenance, where they must ensure the environment remains clean, organized, and free of hazards during the journey. Finally, they are responsible for Conflict Resolution and Security, monitoring passenger behavior to prevent disruptions and handling medical emergencies or security threats with professional training. Whether on an aircraft or a luxury cruise ship, a steward acts as the frontline representative of the company, balancing strict regulatory compliance with high-level hospitality.