First of all try to do the most simple

First try the easiest way, just cancel the last passengers arrive at the airport, arrange for them to take the flight back, those unlucky passengers will not be compensated because of flight cancellation, but this approach quickly led to a by-product, Teng machine evolved into the stressful process, "board game", is worried that the voyage would be canceled. A beach on the South Korean economist Cheng experienced such a case, as he prepared to fly to Chicago from Los Angeles airport, due to the check-in registration over the number of appointments, Cheng A group of swimming only Gaiqian late aircraft, the airport at this time The radio announced the answer for us: "you visitors, I am sorry beyond the actual number of people boarding boarding reservation number, please visit a number of passengers to the next flight, if you are able to turn to two hours after rs gold the flight took off, we will give 80 U.S. dollars in compensation, if you can ride off the plane tonight, we will give 150 U.S. dollars in compensation ... .... " Here, passengers line up in time can be measured in dollars.
Economists have put forward further improvement scheme. In 1968, U.S. economist A "operation over ticket" program, the airlines need improvement is the ticket to the customer at the same time an envelope and a tender for customers to fill them The minimum acceptable amount of compensation, so that when overloaded, companies can choose the lowest number of visitors to cash compensation, and to give priority to the next plane ticket. In fact, this program does help Pareto improvement, those who do not ask for the time passengers have been compensated, and airlines are willing to accept such an arrangement, they can achieve the aircraft at full flight. Although to be painstakingly, but finally improved social efficiency.
May sometimes simply can not be Pareto improvement, such as the following bucket