Houston, Texas – July 29, 2003 — PROS Revenue Management, a world leader in pricing and revenue optimization science and software, and the pioneer and dominant provider of revenue optimization to the travel and transportation industry, today announced that Air China, China's largest international airline and the national flag carrier of China, has licensed the PROS Group Revenue Management System.

Mr. Cai Jianjiang, Vice President Commercial of Air China, states, "This is a large step forward for Air China. PROS has proven their credibility in sophisticated revenue management. Air China will use this PROS Group to better manage our group traffic and increase revenues."

"We at PROS are excited to share our revenue management expertise with Air China as they continue along their impressive pathway of success," says Benson Yuen, president of PROS travel and transportation group. "We are thrilled to have this opportunity to escalate our positive relationship with Air China."

PROS Group is the state-of-the-art, proven solution for airline group revenue management that allows an airline to efficiently evaluate a group request for travel and respond within minutes. Based on specific economic calculations, PROS Group can assess the displacement cost of accepting a group versus seating individually paying passengers, relative to the historical data of past flights, thereby generating the optimal revenue mix for the flight. Both one-time travel groups and series group travelers are evaluated using this system. There are more PROS Group Revenue Management Systems installed and operational than any other group revenue management system in the airline industry. Air China will use the PROS Group System for maximizing revenue opportunities from the evaluation of group requests and for subsequent group tracking to minimize seat wastage across its network.

About Air China
Founded on July 1,1988, Air China is the largest air carrier in China in terms of traffic volume and company assets. Engaging in international and domestic passenger and cargo flight services, Air China is the only national flag carrier in China. Air China currently has a total of 69 airplanes, operating 114 routes, including 43 international routes and 71 domestic ones. This equates to more than 1000 scheduled flights on weekly basis, serving 29 cities in 19 countries and most of the provincial capitals, major cities and tourist attractions in China.

In 1995, Air China was awarded international "Five Star Diamond award" presented by the American Academy of Restaurant and Hospitality Sciences for it's achievements in flight safety, customer service and quality operations. In the 1999 Brand Recognition contest in China, Air China ranked the first place among airlines which annually transport over 6 million passengers.

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