That's not right.
OK!
Great!
That's a great idea!
Same here!
I disagree.
I'm afraid, I can't agree with you.
That's a good point, but...
Absolutely!
So do I.
I don't agree.
No, I don't agree with you.
Yes, I think so too!
Sounds great!
I agree with you.
You can say that again!
I don't think so.