Use a few lines to express your strong interest in the position and your desire to discuss your application further in an interview. Writing a Cover Letter.The opening paragraph should state why you have sent your materials. What should the overall structure be? Business Letter Format (see examples):. Cover letters convey a personal sense of your professional identity, as well as your passion and motivation for the job and company. This guide provides an overview of the key components of a cover letter. I am writing to confirm my acceptance of your employment offer on April 20 and to tell you how delighted I am to be joining XYZ Corporation in Chicago. This guide provides an overview of the key components of a cover letter. Be courteous and informative in your communication.