A letter of requirement can help you formally request a variety of items to help you or your company progress. Write contact details and date.The purpose of a cover letter is to introduce yourself and describe how your specific skills, abilities, and experience match the organization's needs. A Tformat cover letter involves breaking down three to five job requirements in a job description and explaining why you're qualified. Make a customer service agent cover letter that gets interviews. Phoenix Lockbox P.O. Box 21281.