Me: Hello, Dr.'s office, I'd like to make an appointment.

Dr: Okay, how about 3:30?

Me: Today at 3:30? Sounds great.

Dr: No, tomorrow.

Dr: If you want to come today, you'll have to walk-in.

Me: Okay, what time is good?

Dr: 3:30 should be good.

Me: :facepalm: