hello,

I currently have a award flight reservation using Lifemiles mileage. There are

couple of UA segment, so I also have UA confirmation number.

My questions are,

1. How can I make a change for 1-2 segment? Can I do at ua.com as long as

I have UA confirmation number? Or I have to do something with Lifemiles?

I don't need to change entire, just 1-2 segment.

2. Do UA allows 24hours change at the airport even I didn't use ua miles?

The best thing is I can change right now, so if there is any idea or info. please

let meknow. Thanks!!

hw807