"I wanted to thank you for such a great lunch.  Everyone was very impressed with the food and especially the quality."

"I wanted to thank you for the excellent luncheon you catered for our company's offsite launch.  The quality of not only the food but also the presentation was exceptional."

"Thank you and your team for the very professional service and high quality food provided; I plan to use your services again in the near future."

"Today's meal was unusually good.  The menu had lots of fresh produce, there were many tasty vegetarian options, and the taste was great!"