[Client name and address block]
It was a pleasure to meet you [and your family] today at the open house at [address].
Please feel free to contact me if you have any additional questions, or to set up a private showing. If you decide that this home does not meet your needs, I would also be happy to show you additional listings. I have worked as a REALTOR® in this area for [X months/years], and know this community well. I would love the opportunity to find the right home for you.
Thank you for your time and consideration.
[Contact block with full name] firm name firm address email, phone, and social media]