【参考范文】

Dear Mr.Johnson，

I am writing in reference to the company's marketing report of the first half year I received.According to the report，in recent months our product sales have decreased 20%，with some areas even down by 50%.It may due to the lack of media presence.

In the view of above，a department-manager meeting will be held next Monday morning.The marketing department is required to propose specific improving measures，so as to raise the product sales.

Best regards！

Smith