Thank you for your feedback! I appreciate you taking the time to let me know how I'm doing.
It's time for us to part ... but that doesn't mean I'm not here for you if you need me. If you have any questions or future projects I can help you with please don't hesitate to email me.
I can't promise I'll email you back right away because my immediate time goes to my current clients. However, you can be sure you'll receive a reply as soon as possible.