Dear Mr. / Ms. + Last Name:
It was very enjoyable to speak with you about the assistant account executive position at the Smith Agency. The job, as you presented it, seems to be a very good match for my skills and interests. The creative approach to account management that you described confirmed my desire to work with you.
In addition to my enthusiasm, I will bring to the position strong writing skills, assertiveness and the ability to encourage others to work cooperatively with the department. I neglected to mention during my interview that I had worked for two summers as a temporary office worker. This experience helped me to develop my secretarial and clerical skills.
I appreciate the time you took to interview me. I am very interested in working for you and look forward to hearing from you about this position.
Sincerely yours,