text: Chris: Should we go to the concert tomorrow?
  Anna: Is anybody else going?
  Chris: I think Lia and Isabel 
  Anna: nice! I haven't seen them for a long time
  Chris: so should we go?
  Anna: yes, let's do it
  Chris: great! I'll write you more tomorrow morning
  Anna: ok!
target: Chris and Anna will go to the concert tomorrow. Lia and Isabel will probably be there too.