I am trying to book a flight I saw earlier but I can no longer find it. Airline seating availability/prices are updated and adjusted regularly and within any span of time it is possible for a seating class to become sold out or the price change. Was this article helpful? Can't find what you're looking for? Inquiry Form Related articles Can I change my flight? I am trying rebook my flight but I cannot find any at the price/time I found before. I don't remember my itinerary number and cannot log in to MY BOOKING. What should I do? How do I find my airline reservation number on e-Ticket receipt? Why was the flight I selected not finally available for reservation?