I have office hours every Tuesday from 9:30 to 10:20 and every Thursday from 10:30 to 11:20. You are also entirely welcome to make an appointment to meet with me at another time. (Indeed that is often preferable to dropping by during my office hours, since I may already be talking with someone else.)
To make an appointment to talk to me, please send me an e-mail with a list of some times when you are available, as follows:
I am a student in your Introduction to Ethics class, and I would like to find a time to meet with you to discuss some questions I have. I am available tomorrow after 11:30, on Wednesday between 12:30 and 2:30, and on Friday after 12:30.
Sincerely,
__________
Then I will be able to select a time and write back and we will be all set.