Dear Adcom,
Thank you for the offer and or upcoming interviews. I have carefully reviewed your offer. I regret to inform you that I am unable to accept your offer or interviews.
There is really no way to lessen the dissappointment because I realize your offer represents not only your serious time and effort loss to acquire me, and go unrecognized for your brilliant professional ambitious fund raising campaign. Sorry I cannot make a deposit for your new Mercedes.
The large number of qualified competitive offers and the limited cash and time I have available for interviews has resulted me in making a very hard decisions among the many well qualified offers. I am sorry to make this decision in your case, but I hope that you will be able to make better offer, equally satisfactory plans.
I appreciate your interest in me and wish you a happy success in your endeavor.
This decision is not meant to imply that your school is inadequate or on the bottom of my list; it simply reflects the keen competition of offers made among all the other schools. I thank you for considering my application and hope you are successful in finding applicants. I offer my best wishes for your future. Smile, it's cure to better teeth!
Sincerely,
The Applicant