Answer to Question 1
Answer: Close your message with three important elements: (1) a specific request that includes any relevant deadlines, (2) information about how you can be reached (if it isn't obvious), and
(3) an expression of appreciation or goodwill. For example: Please send the figures by April 5 so that I can return first-quarter results to you before the April 15 board meeting. I appreciate your help. Conclude your message by sincerely expressing your goodwill and appreciation. However, don't thank the reader in advance for cooperating; many people find that presumptuous.
Answer to Question 2
Answer: Making requests is a routine part of business. In most cases, your audience will be prepared to comply, as long as you're not being unreasonable or asking people to do something they would expect you to do yourself. By applying a clear strategy and tailoring your approach to each situation, you'll be able to generate effective requests quickly. Use the body of your message to explain your request, as needed. Make the explanation a smooth and logical outgrowth of your opening remarks. If complying with the request could benefit the reader, be sure to mention that. If you have multiple requests or questions, ask the most important questions first and deal with only one topic per question. If you have an unusual or complex request, break it down into specific, individual questions so that the reader can address each one separately. This consideration not only shows respect for your audience's time but also gets you a more accurate answer in less time.