The advancement of technology and the internet sure have made planning for your next trip much easier. You are now able to place your booking anytime and anywhere. But for passengers through most of the 20th century, arranging ticket bookings was not as easy as a few clicks here and there. There were various challenges for airlines to make the reservation, from a limited number of distribution capabilities, manual procedures and lack of technologies. It was quite a journey until we were finally introduced to airline CRS (Computer Reservation Systems), GDS distribution and online travel reservations.