I just flew back from FRA to ATL on a U fare. Coach was very full and we were waiting for the flight from BOM to arrive for connecting passengers (The flight had hit a bird on take off and they needed to check it out--hence the delay). I was snug in my coach seat, next to a mom and her overactive 1 year old lap child. A gate agent walked down the isle, asked if I was who he thought I was and gave me a new boarding pass--seat 4E. I do not fly Delta much and only made SM recently due to a trip to London I took in October.
Thank you Delta.