Dear Felix
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 their 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.
By:Lydia