想請問大家一些機票的問題~~

大家好,
My name is Karen....我住 Chicago, 所以之前買機票都是經由Travelocity or Expedia等網站上購買. 因為敝須由美國出發,可是常常有很多不方便的地方. 例如: 購買EVA的機票時,就無法買到長榮客艙的位子, 就連我拿AA的票, 但是坐EVA的飛機在LA轉機時, 向airport staff尋問要加錢升等到長榮客艙. But they said "no", you guys must know how small EVA's coach is. That sucks!! 所以想要請問各位是否有認識在美國的旅行社或是知道一些其他的訊息,我會非常感謝大家的.....

Sorry about my typing, it took me forever to type Chinese, hopefully you guys can understand my grammar. Thank you so much...