attendant
Definitions
A person employed to provide a service to the public in a particular place or to assist a person of rank.
Occurring or existing as a consequence or concomitant of something else.
Being present or accompanying.
Examples
The flight attendant demonstrated how to use the oxygen mask in case of an emergency.
A parking attendant directed the cars to the remaining spaces in the crowded lot.
The museum attendant politely asked the visitors not to touch the ancient artifacts.