Hi there,

I hope you are doing well and in good spirit. For request letter you need to keep these things in mind.

• It should be written in a formal way. Don't confuse it with your WhatsApp and Instagram message.
• State your reason clearly, as the concerned person don't have much time to go through it.
• Write it in a simple, lucid way. Don't make complex.

And write like a pro. I hope this helps you and give you a basic idea to write.