Diner seating choice (5)
I believe the answer is:
booth
'diner seating choice' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for booth that I've seen before include "Telephone housing" , "Space for voting, phoning, etc" , "Army leader" , "Temporary structure eg for voting" , "Kiosk" .)