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'
(..) .. I'm Iooking to surprise an oId friend, GeneraI McGrath. You haven't seen him? .. I don't think that name was on our guest Iist. And I wouId know. .. I am Dr. LoveIess' personaI assistant. .. Dr. ArIiss LoveIess? .. Funny how some foIks think he's dead. .. (..)1999 Wild Wild West