1. Providing services: The first duty of the waiter is to provide quality services to customers, including welcoming guests, guiding them to their seats, providing menus, answering questions, recommending dishes, accepting orders and ensuring that they are delivered to the kitchen accurately, and finally providing ordering and checkout services.

2. Maintain the dining environment: the waiter is responsible for ensuring the cleanliness and comfort of the dining environment, cleaning the dining table, changing tableware and napkins, and wiping the desktop. Ensure that guests have a pleasant dining experience.

3. Dealing with customers' demands and complaints: The waiter needs to deal with customers' demands, demands and complaints, listen to customers' opinions, provide solutions and try his best to ensure customers' satisfaction.

4. Assist in teamwork: Waiters are usually members of the restaurant team and need to work closely with other employees, such as chefs, bartenders and other waiters, and need to coordinate to ensure smooth service flow and good teamwork.

5. Mastering product knowledge: The waiter needs to be familiar with the menu, special dishes and drinks of the restaurant in order to provide accurate information and suggestions for the guests.