Question: Cathay Pacific is the flag carrier of Hong Kong, with its head office and main hub located at Hong Kong International Airport, its wholly owned subsidiary, is which Hong Kong-based international regional airline, with its corporate headquarters, at Hong Kong International Airport?

<P0-S0> Hong Kong Airport Services Ltd. (HAS) was founded in 1995 and began operations in July 1998 with the opening of Chek Lap Kok International Airport. <P0-S1>  It now employs 3,100 people and owns a fleet of over 3,000 ground-support equipment (GSE) and vehicles. <P0-S2>  It is a wholly owned subsidiary of Cathay Pacific. <P0-S3>  HAS offices are located at Cathay City, Dragonair House, Passenger Terminal Building and Cathay Pacific Cargo Terminal. <SEP> <P1-S0> Air Hong Kong () is an all-cargo airline based in Chek Lap Kok, Hong Kong, with its main hub at Hong Kong International Airport. <P1-S1>  The airline operates an express freight network to 12 destinations in nine countries, including China, Japan, Malaysia, Philippines, Republic of China (Taiwan), Singapore, South Korea, Thailand and Vietnam. <P1-S2>  It has a fleet of Airbus A300-600F General Freighters, which the airline was the launch customer of this new variant. <P1-S3>  Its head office is located on the fourth floor of the South Tower of Cathay Pacific City. <SEP> <P2-S0> Cathay Pacific () () is the flag carrier of Hong Kong, with its head office and main hub located at Hong Kong International Airport. <P2-S1>  The airline's operations and subsidiaries have scheduled passenger and cargo services to 180 destinations in 44 countries worldwide including codeshares and joint ventures. <P2-S2>  Cathay Pacific operates a fleet of wide-body aircraft, consisting of Airbus A330, Airbus A350, and Boeing 777 equipment. <P2-S3>  Its wholly owned subsidiary, Cathay Dragon, operates to 44 destinations in the Asia-Pacific region from its Hong Kong base. <P2-S4>  In 2010, Cathay Pacific, together with Dragonair (rebranded Cathay Dragon), carried nearly 27 million passengers and over 1.8 million tons of cargo and mail. <SEP> <P3-S0> Hong Kong Dragon Airlines Ltd (Chinese: 港龍航空公司), operating brand as Cathay Dragon (Chinese: 國泰港龍航空) and previously as Dragonair, is a Hong Kong-based international regional airline, with its corporate headquarters, Cathay Dragon House, and main hub at Hong Kong International Airport. <P3-S1>  As of 30 October 2013, the airline operates a scheduled passenger network to 44 destinations in 13 countries and territories across Asia. <P3-S2>  Additionally, the airline has 3 codeshares on routes which are served by partner airlines. <P3-S3>  It has an all Airbus fleet of 41 aircraft, consisting of A320s, A321s and A330s. Cathay Dragon is a wholly owned subsidiary of Hong Kong's flag carrier, Cathay Pacific, and is an affiliate member of the Oneworld airline alliance. <P3-S4>  The airline was founded on May 24, 1985 by Chao Kuang Piu, the airline's present honorary chairman. <P3-S5>  Its maiden flight departed Hong Kong for Kota Kinabalu, Malaysia after being granted an air operator's certificate (AOC) by the Hong Kong Government in July 1985. <P3-S6>  In 2010, Dragonair, together with its parent, Cathay Pacific, operated over 138,000 flights, carried nearly 27 million passengers and over 1.80 billion kg of cargo and mail.