premise: Maarten de Jonge (born 9 March 1985) is a Dutch cyclist who rides for the UCI Continental Monkey Town Continental Team . He claims to have attempted to fly on both Malaysia Airlines Flight 370 and Malaysia Airlines Flight 17, but changed flights in order to save money, although no independent sources can confirm this.
hypothesis: De Jonge did not actually fly on Malaysia Airlines.
reason: The context says that de Jonge changed his flight.