Dear Mr. / Ms，

　　On 14 November I submitted a bill for services rendered to your office at the Lille International Exposition. More than a month has now elapsed without payment or acknowledgment of my bill. Please check this oversight，and remit payment at your earliest convenience. I look forward to future services to your corporation.

　　Thank you for your prompt attention to this matter.

　　Yours faithfully

　　尊敬的先生/小姐，

　　十一月十四日我向你辦公室在Lille國際博覽會上提供的服務提交了帳單。一個月過去了你既沒有付款也沒有認可帳單。請檢查這一疏忽并在最方便的時候付款。期望以后還為你公司服務。

　　謝謝您能對此事盡快重視起來。

　　你誠摯的