Dear Professor O'Brill
I wanted to thank you so much for the nomination to represent the freshman class of Community University at the mock United Nations session in Columbus Ohio. I am happy to accept, and look forward to learning more about the United Nations as well as my assigned nation of Kiribati.
I am also going to make use of the idea you gave to me. As you suggested, I will prepare a presentation on the session and submit it for extra credit when I return from Columbus. I am sure it will be a fun experience which I will not forget.