reservación
/reseɾbaˈθjon/ · B2 · noun · f
booking
📅🏨 reservación = re- (back) + serve + -ción: a spot kept back, served for you
Sounds like English reservation: re- (back) + servare (to keep). A table or room is kept back for you in advance. Spanish -ción matches English -tion, so the word carries over almost unchanged.