Question: What airline headquarted in Immeuble La Rotonde in Douala took over Cameroon Airlines Corporation in March 2008?

<P0-S0> The Cameroon Airlines Corporation, trading as Camair-Co, is an airline from Cameroon, serving as flag carrier of the country, a role which was previously filled by the now-defunct Cameroon Airlines. <P0-S1>  Camair-Co has its headquarters in the Immeuble La Rotonde in Douala, and operates out of Douala International Airport. <SEP> <P1-S0> The bishops of Cameroon are the National Episcopal Conference of Cameroon (French: Episcopal Conférence Nationale du Cameroun, CENC). <P1-S1>  The origins date back to the missionaries of the Episcopal Conference. <P1-S2>  In fact, the missionaries were the first to Pallottines feel the need to meet to discuss issues related to the evangelization of the country. <P1-S3>  So in September 1906 in Douala gathered vicars apostolic and missionary in Cameroon than in a missionary synod, which was repeated at the beginning of 1914. <P1-S4>  The First World War and the expulsion of the German missionaries from the country, the outlook changed. <P1-S5>  In fact the mission in Cameroon, after the world war, was divided in two: the missions depended Anglophone Nigeria, while the Francophone Central Africa. <P1-S6>  In June 1949, held in Yaounde, the first plenary lecture of the Ordinaries of the missions of the French-speaking Cameroon: five bishops took part under the chairmanship of the Apostolic Delegate. <P1-S7>  A second conference, this time with all the ordinaries of the country, was held in Nkongsamba in April 1955: by this time the meetings were held regularly apostolic vicars. <P1-S8>  The Second Vatican Council gave great impetus to the formation of the episcopal conferences: the Cameroonian bishops met several times in Rome, on November 24, 1962 and officially founded the Episcopal Conference of Cameroon, who today took the official name in 1972 to its constitution, drawn up already this year, were approved by the Holy See in 1986. <SEP> <P2-S0> Nepal Airlines Corporation (Nepali: नेपाल वायुसेवा निगम ) is the flag carrier airline of Nepal. <P2-S1>  Its head office is in the Nepal Airlines Corporation (NAC) Building in Kathmandu, and its main base is Tribhuvan International Airport, Kathmandu. <P2-S2>  The airline was established in July 1958 as Royal Nepal Airlines Corporation (RNAC) to be Nepal's first airline. <P2-S3>  The airline's first aircraft was a Douglas DC-3, used to serve domestic routes and a handful of destinations in India. <P2-S4>  The airline acquired its first jet aircraft, Boeing 727s, in 1972. <P2-S5>  As of May 2017, the airline operates a fleet of ten aircraft. <SEP> <P3-S0> Cameroon Airlines was an airline from Cameroon, serving as flag carrier of the country. <P3-S1>  Based in Douala, it operated scheduled services within Africa, as well as to Europe and the Middle East out of its hub at Douala International Airport, with a second network focus on Yaoundé Nsimalen International Airport. <P3-S2>  The company was 96.43 per cent state owned, with the remaining shares having been held by Air France. <P3-S3>  It ceased operations in March 2008; its role as Cameroon's flag carrier was taken over by Camair-Co.