Dear Mr. Dean,
My name is Jennifer. I'm currently a second-year student in the English Department. I'm writing this letter to tell you about the schedule of the speech contest at the end of December.
As far as I knew, you have decided to hold a speech contest. Both my classmates and I are really interested in it. However, we found that the day which is chosen to celebrate the competition is too close to the final examination. So could you please help us to change the schedule of this debate contest? How about taking place at the end of January?
What do you think about my opinion? Please reply to me and let me know if it is possible. Thank you very much for your time in considering this request. I'm looking forward to hearing back from you on this matter.
Sincerely,
Jennifer.