✔ 最佳答案
Dear XYZ, Today is my last day at (或 I will be leaving) ABC (on Date), it has been a pleasure working with you. I am grateful that I have learnt a lot and gain much experience through the interaction and cooperation with you. I look forward in meeting you in the future. You are welcome to contact me at: tel. 12345678, e-mail: iou@x.