a dental 'assistant' [=a person whose job is to help a dentist]
She works as a 'sales assistant' [='salesclerk'] at Macy's.
a wealthy executive who has a personal 'assistant'
(..) No, I'm from New Image. We're a stock photo production house in New York City. Um... what kind of application? Photographer's assistant. It's like a training position. About a quarter of our staff photographers started out as assistants. Really? (..)2005 TvShow: Six Feet Under Title: Everyone's Waiting Season: 5 Episode 12