A guest service agent is a person who provides customer service to guests or clients in various settings such as hotels, resorts, and other hospitality establishments. Their primary responsibility is to ensure that guests have a positive experience by providing them with information about the property, its amenities, and local attractions, as well as assisting them with any concerns they may have during their stay. They also handle tasks such as checking in and out guests, making reservations, processing payments, and resolving issues that may arise. Overall, a guest service agent is responsible for ensuring the comfort and satisfaction of the property's guests.