Jack: Hi
Martha: Hi, what do you need???
Jack: oh wow
Martha: What??
Jack: So sour...
Martha: Don't give me shit!
Jack: What happened to you? I just wanted to see how you were doing...
Martha: Sure... 
Jack: Yes. Can you imagine that?
Martha: Actually, I cannot! Every time you talk to me you want something. 
Jack: Well, if you know me that well...
Martha: I do. And I am fed up with your attitude!!!
Jack: Well, in that case, I don't see a point in continuing this conversation.
Martha: There was no point in starting it either...
Martha thinks Jack only talks to her when he wants something and assumes that it is also the case this time. Martha is upset with this. Martha and Jack don't see the point of continuing this conversation.