i am convinced that i could make an impact and add value as a (job title) in your department. as we reviewed my background, i hope that you came to a similar conclusion. it was indeed a pleasure to discuss the opportunities with you. i thank you again for the opportunity and look forward to our next interaction.
again, you can reach me (when) (call time) at (telephone), or you may leave a message on my answering machine, and i will return your call promptly.
sincerely,
(signature)