In Formal letters^x, End a letter^x, Formal letter^x

how to start and end a letter to a parent who is upset about her child's placement in another class.Also what would be the header and footer of such a formal letter.

Hello, I have a couple of questions about writing a letter to a company. This question has probably already been answered somewhere, but I have trouble finding it on here. In this letter, I have to ask an air company to cancel one of our reservations. We accidentally did a double booking,...