Want to change departments in a hospital, how to convince the dean?

It is estimated that it is difficult to convince by language alone.

A radish and a pit. Coincidentally, the department you want to go to is just expanding its enrollment and is short of people. You are qualified for this position, and there are certain thresholds. Not everyone can go. . .

The dean's point of view should also take into account that if you set this precedent and others want to change jobs, you will also give reasons for how to deal with it.

Above, hope to adopt.