[Class] Writing e-mail

Dear Prof. Bita,

I hope this e-mail finds you well.

I'm Eun-Hye Park from Sookmyung university and calss#73.

I'm writing to let you know that I will be absent a next calss.  I have had a stomachache for 5days so I have to get a medical checkup.

Thank you for your time.

Sincerely,
Eun-Hye Park