[usr] Yesterday was my nephews birthday party. Unfortunately, I missed it! [sys] Uhmnn, so how do you  think  she would react? [usr] She was very sad. I felt really bad that I overslept and missed it. [qst] ask me for further details [bhv] [None]
Anyway  you have to find a way of better explaining  ,hope he'll  understand?
I overslept and missed my nephews party and really feel bad about it.