Thank you for your interest in giving me an admission letter. I have reviewed your letter and am impressed with your admission reasons and other suggestions. However, I have received a lot of admission letters this year, under careful consideration I decided not to accept your admission letter. Please understand that this is not a negative evaluation of your program, but rather a reflection of my unique choice criteria.
Once again, I appreciate your courage to give me a admission letter and wish you every success in your future admitting.