Dear Mr. Lauro-Priestly,
I will like to officially inform you that I am interested in this opening, and hope to be under consideration for the job. There is however a slight problem with the schedule, during the week of July 9th, I have to go to an accelerated driver's education class that starts from 10am to 4pm. My mother unfortunately made this decision two months ago and if the opportunity to switch it to a later date arises, I will inform you.

Thank you for your consideration,
David Liu
C block
Student ID: 217181