I need some advice. When I started my current job. I was planned to work Wednesday through Sunday. That did not happen because someone left for hip surgery. So I worked Monday through Friday for the past 4 months. Monday through Friday works the best for me. The company has another person switching departments that covered weekends. So they have no one for weekends and want me to switch to Tuesday to Saturday. I want to tell them no so I can be with my family and friends on weekends. How should I turn them down with the least amount of conflicts and issues in the future?