text: John: I am so angry, Al.
  Al: ???
  John: My supervisor postponed the meeting again.
  Al: Gosh, he's really crap.
  John: I know, I'm thinking about changing him.
  Al: Do it.
  John:  You know it's not that easy.
  Al: Why not?
  John: The whole procedure is complicated and I would have to give a reason.
  Al: Like "he is crap"?
  John: You cannot say it openly at the department
  Al: That could actually create only more problems.
  John: Exactly.
  Al: it would be good if he resined himself.
  John: But should I suggest it to him?
  Al: Maybe you could. 
  John: He actually seems a nice person, he's just a horrible supervisor.
  Al: yeah, a nightmare of every student.
  John: I will try to talk to him next time.
  Al: Good luck with it!
  John: Keep your fingers crossed.
target: John's supervisor postponed the meeting again, which made him angry. He wants to change his supervisor, but it's not easy. He will talk to him, maybe he will agree to resign.