Dear
Thank you for affording me the opportunity to meet with
you and members of your staff.
I know that [ex-salesman] serviced your account
for many years and made many friends at your firm. While
his presence will be missed, I can promise that you will
continue to receive the fine service that has always been
afforded by [firm]
The hospitality you showed me yesterday explains why
[ex-salesman] held your organization is such high regard.