How to reply "Would tomorrow at 10:30am work for you?" in a formal way? [closed]

My professor emailed me to ask my available time: "Would tomorrow at 10:30am work for you?" How can I reply her email in a formal way.


"Would tomorrow at 10:30am work for you?"

Either

"Yes, 10:30am tomorrow is good for me"

or

"No, I'm sorry I can't do 10:30am tomorrow. I could do ..."