Question: What is the name of the brand of commuter and regional flights based out of Dublin Airport, the 15th busiest airport in Europe?

Context paragraphs:
Dubai International Airport: Dubai International Airport (IATA: DXB, ICAO: OMDB) (Arabic: مطار دبي الدولي‎ ‎ ) is the primary international airport serving Dubai, United Arab Emirates and is the world's busiest airport by international passenger traffic.  It is also the 3rd busiest airport in the world by passenger traffic, the 6th busiest cargo airport in world, the busiest airport for Airbus A380 and Boeing 777 movements, and the busiest airport in the world operating with only two runways.  In 2016, DXB handled 83.6 million passengers, 2.59 million tonnes of cargo and registered 418,220 aircraft movements.

Belfast International Airport: Belfast International Airport (IATA: BFS, ICAO: EGAA) is an airport 11.5 NM northwest of Belfast in Northern Ireland.  Formerly known as Aldergrove Airport, after the nearby village of Aldergrove, Belfast International is Northern Ireland's busiest airport and the second busiest airport on the island of Ireland, second only to Dublin Airport.  In 2016, over 5.1 million passengers travelled through the airport, marking a 17% increase compared with 2015.

Pitt Meadows Airport: Pitt Meadows Airport (ICAO: CYPK) is a Canadian general aviation airport located in the southwest of corner of Pitt Meadows, British Columbia.  In 2016, it was the 17th busiest airport in Canada with 109,188 aircraft movements and is the 4th busiest airport in the Lower Mainland.

Chennai International Airport: Chennai International Airport (IATA: MAA, ICAO: VOMM) is an international airport serving the city of Chennai (Madras), Tamil Nadu, India and its metropolitan area.  It is the fourth busiest airport in India in terms of total passenger traffic after airports at Delhi, Mumbai and Bengaluru.  It is the 49th busiest airport in Asia for CY 2016.  In the fiscal year 2016-17, the airport handled over 18.3 million passengers.  Over 400 aircraft movements are handled by the airport per day.  Third busiest Airport in terms of cargo handling in India.  The planned extension of the terminals are about to start as the union government has told that Chennai might not get its new airport soon.

Dublin Airport: Dublin Airport, (Irish: Aerfort Bhaile Átha Cliath ) (IATA: DUB, ICAO: EIDW) , is an international airport serving Dublin, the capital city of Ireland.  It is operated by DAA (formerly Dublin Airport Authority).  The airport is located 5.4 nmi north of Dublin in Collinstown, Fingal.  In 2016, 27.9 million passengers passed through the airport, making it the airport's busiest year on record.  It is the 15th busiest airport in Europe, and is also the busiest of the state's airports by total passenger traffic.  It has the greatest traffic levels on the island of Ireland, followed by Belfast International Airport, County Antrim.

Grantley Adams International Airport: Grantley Adams International Airport (GAIA) (IATA: BGI, ICAO: TBPB) is the international airport of Barbados, located in Seawell, Christ Church.  It is the only designated port of entry for persons arriving and departing by air in Barbados and operates as a major gateway to the Eastern Caribbean.  The airport has direct service to destinations in the United States, Canada, Central America and Europe and serves as the second hub for LIAT.  In 2016, the airport was the 8th busiest airport in the Caribbean region; and the third busiest airport in the Lesser Antilles; after Queen Beatrix International Airport located in Aruba, and Pointe-à-Pitre International Airport located in the Republic of France within the island of Guadeloupe.  GAIA, also remains an important air-link for cruise ship passengers departing and arriving at the Port of Bridgetown, and a base of operations for the Regional Security System (RSS), and the Regional (Caribbean) Police Training Centre.

Thunder Bay International Airport: Thunder Bay Airport or Thunder Bay International Airport, (IATA: YQT, ICAO: CYQT) , is an airport in the Canadian city of Thunder Bay, Ontario.  With 108,130 aircraft movements in 2012, it was the fifth busiest airport in Ontario and the 16th busiest airport in Canada.  During the same year, more than 761,000 passengers went through the airport.

Coimbatore International Airport: Coimbatore International Airport (IATA: CJB, ICAO: VOCB) is the primary airport serving the city of Coimbatore in Tamil Nadu.  It is located at Peelamedu, about 13 km from the center of the city.  Previously known as Peelamedu Civil Aerodrome, it is the 19th busiest airport in India in terms of passengers handled, 16th busiest in terms of total aircraft movement and 14th busiest in terms of cargo handled.  The airport is the second largest airport in terms of passenger traffic and cargo after Chennai International Airport In Tamil Nadu.  About five domestic and three international airlines serve the airport.  The Airport also serves as a growing hub for Cargo transportation.

Aer Lingus Regional: Aer Lingus Regional is an Aer Lingus brand used for commuter and regional flights operated by Irish airline Stobart Air on behalf of Aer Lingus.  Aer Lingus Regional operates scheduled passenger services primarily from Ireland to the UK, France and the Channel Islands.  Its bases are located at Cork and Dublin airports.

Athens International Airport: Athens International Airport "Eleftherios Venizelos" (Greek: Διεθνής Αερολιμένας Αθηνών «Ελευθέριος Βενιζέλος» , "Diethnís Aeroliménas Athinón "Elefthérios Venizélos"") (IATA: ATH, ICAO: LGAV) , commonly initialized as "AIA", began operation on 28 March 2001 and is the primary international airport that serves the city of Athens and the region of Attica.  It is Greece's busiest airport and it serves as the hub and main base of Aegean Airlines as well as other Greek airlines.  The airport is currently in Group 2 of Airports Council International (10–25 million) and as of 2016, Athens International is the 27th busiest airport in Europe.

Supporting paragraphs: Aer Lingus Regional Dublin Airport
Answer: Aer Lingus Regional