It should express your interest, enthusiasm and, most importantly, your qualifications for the particular position to which you are applying. This factsheet guides you through all the things that you need to do before your new PA starts work with you.Welcome to the University of Pennsylvania. We are pleased to have you on board and a part of the Penn community. Dear Mr. Krebs: I am writing to confirm my acceptance of your employment offer on April 20 and to tell you how delighted I am to. I'm applying for CPT for my remote internship. What address should I use for my CPT application as. You can fill out the Express Interest Tool for yourself, or someone you know can fill it out on your behalf.