4. Farewell Party
Dear Cusack,
As you were informed before , Mrs . Smith , our head of the marketing department , will be retiring .
She was one of the most important and talented persons in our company .
So we are planning to have a surprise farewell party on this Sunday .
Please come to the party .
Because it is a surprise party , keeping it secret is the most important .
Please inform everyone about it .
An immediate reply is needed .
Sincerely, Edward Lee
