求助!!这种情况怎么办!!!!!没有任何通知的情况下机票被改了我在expedia上预定了上海-旧金山-盐湖城以及旧金山-上海的开口机票,支付,选择了作为半个月后去看,发现机票变成了 上海-旧金山 round 行程发邮件问expedia,被告知We received a notice from United Airlines that there has been a significant change to your flight schedule to the itinerary numbers *******The...