Dear :

We have decided to hold a grand party on [date] for the th anniversary of our company. [number] of our firm's most important business associates and local celebrities will be invited. We feel that, with your expertise in organizing public events and your access to local caterers and entertainers, you will be able to assist us in the planning and preparation of this event.

Shall we set up an appointment to discuss the matter? Please give me a call at [phone number]. Since we have only weeks to prepare, I hope to meet you as soon as possible.

Sincerely yours,

[name]

[title]