When turning in notice, we recommend doing it in writing by preparing a short and to the point resignation letter.
Please accept this as my official notice of resignation. I appreciate the work we have been able to accomplish together at (company name), but I have now made a commitment to another organization and will begin with them in two weeks.
Know that it is my intention to work diligently with you to wrap up as much as possible in the next two weeks to make my resignation as smooth as possible. If you have any suggestions on how we can best accomplish that goal, I hope you will share your thought with me, as I am eager to leave on the most positive note possible.