题目内容：
Read this message from your secretaryTelephone Message
Mr Davis called-our quotation received, but the price is too high. He asked us to reduce by 3%. I contacted our Sales Dept. Was informed the cost of raw materials is rising. Ours is the lowest price. Also, our quality is better and more orders are coming. Impossible to reduce.
Write a letter to Mr. Davis:
Telling him you cannot reduce you price
Saying why you cannot reduce your price
Persuading him to reconsider your price
Asking for an early reply
Write 60-80 words
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