Our international flight is in a couple of days and we are extremely worried because we just found out my wife's name when booking does not match her passport exactly. On her passport her last name is hyphenated like AAAA-BBBB but when I booked I only put AAAA. We called our travel agent who contacted United and they are refusing to make any type of correction. I put my wife's full name online for the passport/immigration information. What can we do?