Dear Sire of Mine.
Thank you for getting me to class an hour late, because you decided to take the wheel despite being tired and having no clue how to get to the highway, making a 15 min trip around 1 1/2 hrs.
I was teaching that class.
My student arrived one minute after me, whist the place was in disarray and I had not calmed myself. Things happen. I understand. The class went okay.
Did you even know that I was late?