text: Alina: Has anybody seen Jason recently?
  George: nope, since he changed his job, I've had no news from him
  Mary: neither I
  Alina: very strange...
  Tom: Have you noticed he left the group some weeks ago?
  Alina: I did, but I though he just didn't want to read what's going on in the office
  Alina: I could understand it
  Mary: sure, also we write here a lot of general bullshit
  Alina: mostly mean gossips :P
  George: so maybe just write him a private message
  Alina: I wrote him on Friday, he hasn't responded since
  Alina: I don't understand what's going on
  Mary: hard to say really
  Mary: seems he doesn't want to be in touch...
target: Alina, George, Mary and Tom haven't heard from Jason since he changed his job. Jason left also their group some weeks ago.  He hasn't responded to the private message Alina wrote him on Friday.