I'm trying to buy a China Southern airline ticket online Canada to Bangladesh. The first page has two boxes given name box and surname box. Instruction says to put first name and middle name in given name box. If I do so next page 'additional information ' page which has a box for middle name I cannot put my middle name there. But if I don't put my middle name in the given name box in the first page and instead put it in the next page on later pages they only show my first name and last name. All their customer service office is closed except the Chinese ones but they could not give any answer. Was wondering If anybody already know the answer.