Thanks Lost and Artie.

I said

Hi T.

Yes, I can do 2 PM, even though it isn't my preference, because I "see you" on my lunch break and that means taking lunch quite late. I eat quickly before I log in. I admit though that the double booking left me feeling like, I don't matter to you, and absurdly annoyed. However, if the other client was booked first, of course they should have the time. And, obviously you are human, and mistakes happen from time to time, and it the grand scheme of things it is not a huge deal as you were able to provide space for me on the same day even. So I will see you tomorrow at 2 PM. I hope you enjoy the first day of Spring.

Kit

T responded:

I just had a cancelation for the 12 pm slot, so would you prefer that?

I'm sorry you felt annoyed or slighted in some way. That was not my intent.

I replied

Yes, 12 would be better. Thank you for offering it to me. See you tomorrow.

T said:

You're welcome.