Martha: Hey. Can you help me? 
Jason: Hey.
Martha: So?
Jason: So what?
Martha: Can you help me or not? 
Jason: Depends. What do you want?
Martha: I need you to go to the dean's office and ask them to give you a copy of my M.A. 
Jason: And y would I do that?
Martha: You work there, don't u? 
Jason: So?
Martha: So you can go and do this for me, can't u?  
Jason: Still, y would I?
Martha: We're friends, aren't we? 
Jason: Actually, not. We haven't talked for months.
Martha: So what? Please do this 4 me. 
Jason: Nope. Not gonna. 
Martha: I thought we were friends! I was clearly mistaken.
Jason: Apparently. 
Jason is not willing to get the copy of Martha's M.A. from the dean's office, because he doesn't consider her a friend.