station attendant; station staff
Refers to any employee working at a train station, including ticket gate staff, platform attendants, and customer service personnel.
I asked a station attendant how to buy a ticket.
After the last train, the station staff also go home.
When I asked a station attendant for directions, he told me right away.
I showed my ticket to the station attendant at the gate.
The station attendant guided me to the platform.