DOUBLE BOOKING
double booking: translation
double-book ˌdouble-ˈbook verb [transitive] TRAVEL
to promise the same hotel room, seat in a theatre, table at a restaurant etc to more than one person by mistake:
• The Grand was double-booked and had to offer us the first week at another hotel, which was, in our opinion, inferior.
— double booking noun [countable, uncountable] :
• There's a problem over a double booking.