Block tickets are hold tickets that are not paid for. An itinerary, fake ticket, or flight reservation are additional terms for a block ticket. The block ticket contains the passenger's full name, the origin and destination, the traveler's full name, and all other flight details. The primary difference between confirmed and fake flight tickets is that while the payment for the confirmed ticket has already been paid, the payment for the dummy ticket has not and is currently pending. You may verify the validity of the PNR (booking reference number) that comes with a block ticket on the airline's website.
If a ticket has an invalid PNR and the airline website is unable to verify it, this indicates