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?
Context: 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.  It now employs 3,100 people and owns a fleet of over 3,000 ground-support equipment (GSE) and vehicles.  It is a wholly owned subsidiary of Cathay Pacific.  HAS offices are located at Cathay City, Dragonair House, Passenger Terminal Building and Cathay Pacific Cargo Terminal. Kai Tak Airport (IATA: HKG, ICAO: VHHX) was the international airport of Hong Kong from 1925 until 1998.  It was officially known as Hong Kong International Airport from 1954 to 6 July 1998, when it was closed and replaced by the new Hong Kong International Airport at Chek Lap Kok, 30 km to the west.  It is often known as Hong Kong International Airport, Kai Tak, or simply Kai Tak, to distinguish it from its successor which is often referred to as Chek Lap Kok Airport. The Hong Kong International Airport (“HKIA”), is connected to about 180 destinations, through over 1,000 daily flight by more than 100 airlines.  In order to meet future demand until 2030 and beyond, the Airport Authority Hong Kong (“AAHK”) proposed the expansion of HKIA into a three-runway system (“3RS”) to support the two currently operated runways, through the introduction of Master Plan 2030 (“MP 2030”) in 2011.  Facing a projected increase in air traffic, the Airport Authority Hong Kong promulgated the Hong Kong International Airport Master Plan 2030 on 2 June 2011.  Its main project aimed at expanding the current airport infrastructure to a Third-Runway System to maintain the position of the Hong Kong International Airport as a leading international and regional aviation hub. Cathay Pacific () () is the flag carrier of Hong Kong, with its head office and main hub located at Hong Kong International Airport.  The airline's operations and subsidiaries have scheduled passenger and cargo services to 180 destinations in 44 countries worldwide including codeshares and joint ventures.  Cathay Pacific operates a fleet of wide-body aircraft, consisting of Airbus A330, Airbus A350, and Boeing 777 equipment.  Its wholly owned subsidiary, Cathay Dragon, operates to 44 destinations in the Asia-Pacific region from its Hong Kong base.  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. Airport Freight Forwarding Centre (AFFC) () is the leading warehouse service provider in Hong Kong and the only warehousing and office facility at the Hong Kong International Airport in Chek Lap Kok, New Territories, Hong Kong.  AFFC is a wholly owned subsidiary of Sun Hung Kai Properties, one of the largest property developers in Hong Kong.  It offers tenants more than 1300000 sqft of storage space and 175000 sqft of class A office space. Hong Kong Express Airways Limited, or HK Express (), is a Hong Kong-based low-cost airline which provides scheduled air service to twenty-eight destinations in Asia, including China, Japan, Korea, Cambodia, Myanmar, Vietnam, U.S. Territories, Taiwan and Thailand.  The airline's main hub at Hong Kong International Airport uses a fleet that consists exclusively of Airbus A320 family .  The airline is one of the four founding members of the U-FLY Alliance. Hong Kong Dragon Airlines Limited, operating as Cathay Dragon (previously as Dragonair), is an international airline headquartered in Hong Kong, with its corporate headquarters, Dragonair House, and main hub at Hong Kong International Airport.  s of 30 2013 , the airline operates a scheduled passenger service to 44 destinations in 13 countries and territories across Asia.  Additionally, 3 other destinations in the network are served by partner airlines using codeshares.  The airline was founded on 24 May 1985 by Kuang-Piu Chao, the airline's present honorary chairman. Skypier () is a cross-boundary ferry pier integrated within Hong Kong International Airport, Chek Lap Kok, New Territories, Hong Kong.  It is operated by Hong Kong International Airport Ferry Terminal Services Limited, a joint-venture company between Chu Kong Passenger Transport Co., Ltd and Shun Tak-China Travel Ship Management Limited.  At this pier, passengers abroad can transit from Hong Kong International Airport to piers in the Pearl River Delta of Guangdong Province or vice versa, without immigration and customs clearance through Hong Kong. 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.  As of 30 October 2013, the airline operates a scheduled passenger network to 44 destinations in 13 countries and territories across Asia.  Additionally, the airline has 3 codeshares on routes which are served by partner airlines.  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.  The airline was founded on May 24, 1985 by Chao Kuang Piu, the airline's present honorary chairman.  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.  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. Air Hong Kong () is an all-cargo airline based in Chek Lap Kok, Hong Kong, with its main hub at Hong Kong International Airport.  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.  It has a fleet of Airbus A300-600F General Freighters, which the airline was the launch customer of this new variant.  Its head office is located on the fourth floor of the South Tower of Cathay Pacific City.
Answer: Cathay Dragon