Formal E-mail writing

Dear professor,


I hope this e-mail find you well.


My name is Lee In-hye.
I attend your class#97.


Our class is every Thursday and Saturday but I can't attend this Saturday's class.
Because I have to go my brother's wedding ceremony.
I'm very sorry for absence.
But I'll be attend next Thursday's class.


Thank you for your time.


Regard,
Lee In-hye