answer: Ms. Liu tells Mr. Li the reason she cannot work overtime. Mr. Li promises to find someone to replace her.
documents: #Person1#: Excuse me, Mr. Li. I have something to discuss with you.
  #Person2#: I'm in a bit of a hurry, Ms. Liu. Can you wait for a minute?
  #Person1#: I would really appreciate it if we could talk for a few minutes now. It's about the overtime you've asked me to put in.
  #Person2#: All right. What's the problem?
  #Person1#: I really can't work overtime. Because my husband has been ill recently, I must take care of him.
  #Person2#: I'm sorry to hear that. Take good care of your husband. I'll find another one to replace you.