<prompt> Translate the following text to EnglishVouchers, passes, barua za utangulizi, na kadi za biashara zilizochapishwa zote hufanya kazi kama uchawi wakati nafasi iliyothibitishwa imekuwa haijathibitishwa.  <response>: Vouchers, passes, letters of introduction, and printed business cards all work like magic when a confirmed reservation has become unconfirmed. 