text: Chris: do u think Tim will come with us to the concert?
  Ben: don't know? Why don't u ask him?
  Chris: he doesn't want to speak to me!!
  Ben: why?
  Chris: that's an old story.. from last year
  Ben: you'd better solve that soon. Go and talk to him!
  Chris: are u sure?
  Ben: of course! and if he doesn't, just send him a mail with your apologies
  Chris: I have to think about it. So who's coming tonight?
  Ben: I and Simon. May be Tim
  Chris: ok see u
target: Tim doesn't speak to Chris. Ben, Simon, Chris, and probably Tom, are going to the concert tonight.