Dear Sir/Madam
I would like to express my pleasure at speaking with you on the phone this afternoon, and I also appreciate your interest in my qualifications.
I am enclosing my resume, which details my uncommonly thorough background in public relations, business communications, and human resource development. Along with these qualifications, I am also a conceptual thinker, a generator of creative ideas, and an initiator.
I would be happy to be given an opportunity to demonstrate these qualities in person, and will prove to be an asset to your firm (name). I shall look forward to hearing from you.
Sincerely