Dear

It was our pleasure to serve you and your guests for the
luncheon you held at our restaurant on     [date]

We hope that our cuisine and service was satisfactory and
that you were pleased with having selected the   [name of
restaurant]     for this event.  We are always anxious to
improve our high standards and would appreciate your
comments or suggestions about the service we provided.

Thank you for giving us the opportunity to serve you.