Simplify the following text for a Grade 6 native English-speaking person.
Original: The Prime Minister of Vietnam signed a decision dated May 15 2008 to put this airport into operation on May 18 2008 . The first commercial flight originated from Hanoiâ s Noi Bai International Airport landed at this airport on May 18 , 2008 , the official inaugural date of the airport .
Simplified: The first flight to this airport was from Hanoi on May 18 , 2008 , the date this airport began operation .