No kids, nor do I want any, thanks.

It sounds as if you're seeking to clarify your thoughts and desire to be honest with the person you're speaking with. Here's a possible response: "I appreciate your question and the opportunity to share my intentions. I am indeed hoping to find the right person to share my life with, someone who values love and companionship. Although I already have two children who mean the world to me, I am not looking to have any more kids at this stage in my life. Of course, if you have children, I would be more than happy to embrace them as part of our lives together. I simply feel that I am too old to start raising babies again. I hope this helps you better understand where I am coming from, and I look forward to getting to know you more."