Here’s a sample email you can modify according to your needs,
Subject: Request for Leave Approval
Dear / Hi [HR Manager's Name],
I hope this message finds you well. I am writing to request your approval for a leave of absence.
I would like to take leave from [start date] to [end date], totaling [number of days] days. The reason for this leave is [briefly explain the reason if you are comfortable doing so].
During my absence, [colleague's name or your plan] will cover my responsibilities to ensure a smooth transition and minimal disruption to our team's workflow.
I understand the importance of planning and thus, I am making this request in advance to facilitate any necessary arrangements.
Please let me know if you need any additional information or if there are any forms I need to complete as part of the leave request process.
Thank you for considering my request. I look forward to your positive response.