A talent agent, or booking agent, is a person who finds work for actors, authors, broadcast journalists, film directors, musicians, models, professional athletes, screenwriters, writers, and other professionals in various entertainment or sports businesses. In addition, an agent defends, supports and promotes the interest of their clients. Talent agencies specialize, either by creating departments within the agency or developing entire agencies that primarily or wholly represent one specialty. For example, there are modeling agencies, commercial talent agencies, literary agencies, voice-over agencies, broadcast journalist agencies, sports agencies, music agencies and many more.