How to write the refund instructions?

The instructions for refund are as follows:

1. First of all, the title: at the beginning of a document or email, use a clear and concise title to explain the content, such as the explanation of refund.

2. Opening paragraph: Before the text begins, briefly introduce the background and purpose of the refund request. Explain the reasons for refund, such as flight cancellation and personal reasons.

3. Finally, explain the refund in detail: in the body part, explain the relevant information of the refund in detail layer by layer.