When will he meet with Trevor? What do the speakers say about Jack?

F：When are you coming back from the conference?
M：I’m flying back on Monday，late in the afternoon．
F：Remember you are meeting with Trevor on Tuesday morning!
M：Oh，could we reschedule the meeting to Tuesday afternoon，because I need to get some materials ready in the morning．
F：Ok，no problem !

M：Did you have to work with Jack on that project?
F：Unfortunately，yes．
M：I feel so sorry for you．I remember when I worked on the data analysis with him—everything he did，I had to redo．He did spend a lot of time，but he simply couldn’t get the result right．It would have been faster if I did it alone．
F：That’s exactly what happened to me．