Good idea! I totally agree with you.
好主意!我完全同意你的.意见。
We are all for your suggestion as to how to render better service.
我们完全同意你关于提供更好服务的建议。
I think you are right.
我认为你是对的。
Excellent! That's exactly what I think.
好极了!那恰恰是我所想的。
That sounds reasonable. We need to get the best possible deal.
听上去有道理。我们应该获得更好的交易条件。
I share your views.
我同意你的意见。
I support your opinion.
我支持你的意见。
I've no objection.
我没反对意见。
I'm in favor of your proposal.
我赞成你的意见。
Suits me fine.
这对我合适(我同意)。