I apologize for the stupid question, but my first trip on KE in Dec is booked as a "U" fare.

It's a rewards ticket I booked through NWA for PVG - BKK (via ICN). My online and e-ticket receipt show just "U" class. But my online WP account shows it as:

PVG-ICN Standard WBC
ICN-BKK Standard WBC


Thanks.