The document discusses airline flight availability displays. It explains that availability displays show flights with available seats for sale or waitlist, while schedule displays show all scheduled flights, including fully booked or canceled ones. Both displays include flights up to 361 days in the future and 3 days in the past, ordered by non-stop, direct, and connecting flights. It provides an example of how to request an availability display using a transaction code and includes a sample availability display layout showing elements like airport/city codes, dates, times, flight numbers, and seat classes.