請問要如何用英文回應

Dear Xxxx

I asked a favor from you last week about providing xxxx but you were
then busy. I wonder if it is convenient for you to help sometime this week?
Thanks a million.

Best regards,
Xxxx

Thanks for your prompt reply. Your assistance in providing me with the required information is highly appreciated.

I look forward to hearing from you ASAP.

2015-03-26 11:09:28 補充：
對方回覆
This request is not forgotten. I am super busy this days. I hope to come back to you next week.

同事已覆你沒有忘記你之要求, 並解釋因超忙, 要下周才有空「應酬」你。

因此,「禮貌的提醒」可免則免, 不需囉嗦,以免別人感覺你超煩, 禮貌上簡覆感謝同事之承諾幫忙已可!

2015-04-02 18:04:48 補充：
樓主:

將心比心, 易地而處當你是該部門經理, 已回應同事會下周跟進其要求,
而該同事覆件時卻刻意「禮貌的提醒」, 你的感覺會如何?

If possible, please give me the information that I require. Thanks for your cooperation.

Re:-memento:-(these days ?)
This is a prompt reminder for my past request dated (xxxxdd--mm--yyxxxxxx).
Kindly treated as a reminder to.
Thanks.