Your address
　　Month, Date, year
　　Receiver’s address
　　Dear …,
　　I am extremely pleased to hear from you. And I would like to write a letter to tell you that_____.
　　……
　　I will greatly appreciate a response from you at your earliest convenience/I am looking f0rward to your replies at your earliest convenience.
　　Best regards for your health and success.
　　Sincerely yours,