I am job hunting currently, and have a couple of potential offers. Of course, before I have an official job offer in hand and resign, I will do everything I am supposed to do and fulfill my responsibilities.
However, there are a few projects that are in the planning and will start in a couple of months, and my manager wants to distribute responsibilities to team members. Because I am already planning to move on, I don't feel comfortable making promises.
I wonder if there are good ways to politely refuse taking on future responsibilities.