I’d like to formally request for a leave of absence from [date] to [date] due to personal reasons, which I want to remain confidential.
I hope for your understanding on this matter. I need to urgently address my personal concerns so that they would not interfere with my work and long-term success in this company.
Kindly advise me if you can accommodate me with this request. Thank you for your understanding. You can ask me if you need more information.