3) Role playing : Your boss just asked you to stay to work overtime tonight. But you can't. Explain the situation to your boss and offer some alternatives
Excuse me sir, Do you have a minute? I'd like to talk about working overtime tonight.
I understand we're busy with project. I'm also aware that we need to work overtime to meet the deadline. However, there is a problem . Next Wednesday is the start of Chuseok holiday season. As plus, tomorrow is recommended day off. So, tonight my family will go to hometown. If I don't go, my parent and grand ma would be wait of us. On Tuesday we will buy some ingredients for memorial service. Even though we will start early morning, we would be in a traffic jam. Then it is difficult to buy it with them.
I'm sorry that I have to leave on time tonight. However, I've already finished 95% of the project and I handed it over to Brain to finish it. If need, I can come this Saturday to complete it. May I do that?