Question: What french airline, located in Reunion, France was a founding member of The Vanilla Alliance?

Context paragraphs:
Air Antilles: Air Antilles is a French airline based at Pointe-à-Pitre International Airport in Guadeloupe, France.  It is a regional airline operating scheduled and seasonal services in the French Antilles.

Air Caraïbes: Air Caraïbes is a French airline and is the regional airline of the French Caribbean which comprises two overseas departments of France: Guadeloupe and Martinique.  The airline is headquartered in Les Abymes in Guadeloupe.  and its main base is Pointe-à-Pitre International Airport, with a hub at Le Lamentin Airport, near Fort-de-France.  It operates scheduled and charter services serving 13 islands in the West Indies.  It also operates transatlantic flights to Paris using Airbus A330 and Airbus A350 aircraft under the Air Caraïbes Atlantique brand.  The airline code shares with LIAT.

Air Canada: Air Canada () is the flag carrier and largest airline of Canada.  The airline, founded in 1937, provides scheduled and charter air transport for passengers and cargo to 182 destinations worldwide.  It is the world's eighth-largest passenger airline by fleet size, and is a founding member of the Star Alliance.  Air Canada's corporate headquarters are located in Montreal, Quebec, while its largest hub is at Toronto Pearson International Airport.  Air Canada had passenger revenues of CA$13.8 billion in 2015.  The airline's regional service is Air Canada Express.

United Airlines: United Airlines, Inc., commonly referred to as United, is a major U.S. airline headquartered in Chicago, Illinois.  It is the world's third-largest airline when measured by revenue, after American Airlines and Delta Air Lines.  United operates a large domestic and international route network, with an extensive presence in the Asia-Pacific region.  United is a founding member of Star Alliance, the world's largest airline alliance.  Regional service is operated by independent carriers under the brand name United Express.  Its main competitors are American Airlines, Delta Air Lines, and Southwest Airlines.

Vanilla Alliance: The Vanilla Alliance (French: "Alliance Vanille" ) is an airline alliance formed in September 2015 to improve air connectivity within the Indian Ocean region by strengthening cooperation between the airlines of Indian Ocean Commission members.  Ultimately, the alliance wishes to increase tourism, trade, and business ties in the region.  The founding members are Air Austral, Air Madagascar, Air Mauritius, Air Seychelles and Int'Air Îles.

Union de Transports Aériens: Union de Transports Aériens (UTA) was the largest wholly privately owned, independent airline in France.  It was also the second-largest international, as well as the second principal intercontinental, French airline and a full member of the International Air Transport Association (IATA) since its inception.

French Football Federation: The French Football Federation (FFF) (French: "Fédération Française de Football" ) is the governing body of association football in France, as well as the overseas departments (Guadeloupe, French Guyana, Martinique, Mayotte and Réunion) and the overseas collectivities (New Caledonia, French Polynesia, Wallis and Futuna, Saint Pierre and Miquelon and Saint Barthélemy-Saint Martin) and also in Monaco.  It was formed in 1919 and is based in the capital, Paris.  The FFF was a founding member of FIFA and is responsible for overseeing all aspects of the game of football in France, both professional and amateur.  The French Football Federation is a founding member of UEFA and joined FIFA in 1907 after replacing the USFSA, who were founding members.

Air France: Air France (] ; formally "Société Air France, S.A."), stylized as AIRFRANCE, is the French flag carrier headquartered in Tremblay-en-France.  It is a subsidiary of the Air France–KLM Group and a founding member of the SkyTeam global airline alliance.  As of 2013 Air France serves 36 destinations in France and operates worldwide scheduled passenger and cargo services to 168 destinations in 93 countries (including overseas departments and territories of France) and also carried 46,803,000 passengers in 2015.  The airline's global hub is at Charles de Gaulle Airport with Orly Airport.  Air France's corporate headquarters, previously in Montparnasse, Paris, are located on the grounds of Charles de Gaulle Airport, north of Paris.

Canadian Airlines: Canadian Airlines International Ltd. was a Canadian airline that operated from 1987 until 2001.  The airline was Canada's second largest airline after Air Canada, and carried more than 11.9 million passengers to over 160 destinations in 17 countries on five continents at its height in 1996.  Canadian Airlines served 105 destinations in Canada, more than any other airline.  Canadian Airlines was also a founding member of the Oneworld airline alliance.

Air Austral: Air Austral is a French airline with its headquarters at Roland Garros Airport in Sainte-Marie, Réunion, France.  The airline's main base of flight operations is Roland Garros Airport.  It operates scheduled services from Réunion to metropolitan France, South Africa, Thailand, India and a number of destinations in the Indian Ocean.  The company has 900 employees.

Supporting paragraphs: Vanilla Alliance Air Austral
Answer: Air Austral