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'
(..) You don't deserve me. I quit. - Andy, hi. - Hello, Prue. I am so sorry I'm late. My meeting ran over. Your assistant said I could wait here. I hope that's okay. Yeah, of course. Can I get you anything? Something to drink? I'm fine. - How are you? (..)1998 TvShow: Charmed Title: The Truth Is Out There... and It Hurts Season: 1 Episode 8