456, X Street, Y Avenue,
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Andrew Hall,
I was extremely pleased to receive such a quick answer to my request for additional assistance during the Senator’s visit. Security is always an issue and knowing that there will be more assistance available to our local campus force is a comfort. The whole university is relieved to know that your quick action has resolved what may have proved to be a tricky situation.
Everyone here looks forward to the Senator’s visit and to meeting you in person.