How to make a more formal leave request letter?

Leave letter

Leader of Changchun Guoshang Department Store Co., Ltd.:

Hello:

My counter shopping guide Wang Xue, because her mother is ill , I need to take one month's leave from September 21st to October 20th. Our counter will recruit another temporary salesperson to take over.

I sincerely ask the leader to consider my actual situation and approve it. Thank you very much.

Thank you

Best wishes

Sang Qi