How to write the reason for asking for leave at nine prices

1. Dear leader, since I need to go to the hospital to receive the nine-valent vaccine, I would like to ask you for a day off. I have made an appointment with the doctor and arranged the time. Please approve my leave application so that I can I am able to get vaccinated in time. Thank you for your understanding and support.

2. Dear leader, because I need to be vaccinated with the nine-valent vaccine, I need to go to the hospital at the designated time. Since this is an important health measure, I hope to get your approval so that I can go to the hospital in time. Get vaccinated.