Dear Raushan,
Kindly find the required letter as we are using in our company. I hope it will be useful to you. Need to send this letter to a employee by Registered or Speed post and make secure the evidence proof for your notice. it may help in future.
Kindly draft your request properly instead of typing a simple sentence with out your name below, we have a unique custom to request to others. as a HR professionals we need to stick on to that forever.
thanks
shivam