booking clerk

from The Century Dictionary.

• noun The clerk or official who has charge of a register or book of entry; specifically, in Great Britain, a ticket-clerk at a railway-station, theater, etc.

from the GNU version of the Collaborative International Dictionary of English.

• A clerk who registers passengers, baggage, etc., for conveyance, as by railway or steamship, or who sells passage tickets at a booking office.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun someone who sells tickets (e.g., theater seats or travel accommodations)