Read the following information about a typical dental practice:

Community Dental has two offices in the same city $$ the North office and the South office. These offices offer the same dental services to patients. Patients can make appointments to either office at their convenience to see the dentist of their choice. Both offices are similarly equipped.

The professional staff includes the dentists, hygienists, dental mechanics, and administrative staff $($receptionist$,$ billing clerk, and office manager$).$

Each Community Dental office has a waiting area served by a receptionist who uses a computer to check in patients, schedule one of the examination rooms, and answer the phone. The waiting room has a door opening to the outside. A second door admits patients into the rest of the facility. Background music plays inside the waiting area. There is also a large aquarium on display.