英文書信~ 我要將工作交接給人,但是我沒有離職

建議致函如下:

Dear Sir,

Kindly be informed that I have taken another position in the company,
and as of July 15, 2011, my colleague Sandy Chen will be in charge of
all the services for UMC. She will get in touch with you soon.

It has been great pleasure working with you for the past 12 months. In
case of need, please feel free to include my email address in the c.c.
recipient field of your emails, and I will be more than pleased to render
any required assistance.

Best regards,

Xxxx Xxx

Dear customers:It has been my pleasure to work with you for the past …years. Now, for some unforeseen reason, I have to leave this job. As of July 20, 2011 my colleague Sandy Chen will take over the operation. She is knowledgeable and energetic. She can do what I do, only better.I am still around within the company and willing to help should my assistance is needed.

Dear Sir

We have a new colleague, Sandy Chen.
She will instead of me to take over the routine job in UMU from July 15th, 2011. I am very happy to co-work with you during this period.We just have a job rotation and I will still support Sandy to serve you. Please don’t hesitate to let me know, if you have any issue. Thank you very much for your support always. Best regards, XXX

This year is very pleased to work with him, if there is a need for help in the future things can still tell me that!! Sandy is responsible for back, but I'll be in cc. ~
Best Regard!