Functional icons such as sofas are often called "seats" or "customer service" icons. This icon is called agent or customer service because it represents the function of communicating with customers on the function machine. Seating or customer service icons are common in the communication or service menu of function machines, and are used to provide functions such as telephone, SMS or online chat between users and customer service personnel.

The design of this icon is inspired by the sofa, which is a comfortable seat and is usually associated with rest, communication and reception. Therefore, the sofa icon is used in the function machine to represent customer service or seat function, aiming at conveying a comfortable and cordial feeling to users, suggesting that users can get service, consultation or help here.

Extended content: In addition to function machines, icons of seats or customer service are also common in other electronic devices and software applications. Their design forms may be different, but their main purpose is to provide users with a way to communicate with customer service personnel. With the development of technology, modern agent or customer service icons are not only limited to telephone or SMS communication, but also can communicate through instant messaging, video calling and other forms. The existence of these icons makes it easier for users to obtain the required services and support, and improves the user experience and satisfaction.