How to write the salute format of the leave note?

This salute is used at the end to express greetings.

You can refer to the following structure:

go on vacation

Dear teacher:

Hello!

I can't go to school because I am ill. I need to be treated in the hospital for three days and report to the school after three days, so I need to apply for three days off, from the date to the date.

I hope the teacher will approve.

I am here to convey

welcome

Requestor: Baidu

What's the date this year?

The last two people who ask for leave should be written on the right. Salute should be written on the left of the top line.