My flight locator is MHVS43. I am flying from Los Angeles to Beijing on October 11. My flight no is CA888. My economy class ticket was confirmed. I requested for a upgrade to business class two weeks ago. No information was received from the airlines so far. I see that I have changed for $ 800.00 already on October 7 th. Called Air China several time and after every time waiting for more than an hour got hold of some customer service who couldn't help me. This is not the way to do business. Please find and inform me by today what's going on. Geetimala Mukherjee Phone [protected]