(Systems Software Limited)
(15th June, 2003.)
Dear (Mr. Shah),
At the outset let me thank you for providing us an opportunity to (cater to your in-house party) on (12th June, 2003).
It is indeed a matter of great pride for us to (cater to such a big clientele) and get such a positive feedback from you.
We look forward to more such opportunities in the future.