A Can I help you?
B Of course.
A You haven't a clue. Your work is totally useless. Why don't you take a running jump?
B Well, thanks. That's most encouraging.
A I'm glad I could help.
B. Certainly, you have helped a lot. I now know what a ghastly human being you are.
A There's no need to take that attitude. It was just constructive criticism.
B I think I have had enough of your 'constructive criticism'.
A You want to see me when I set out to hurt and humiliate.
B I'm sure you are very good at that.
A You are so negative. You really should take a more positive attitude.
