text: Sarah: Going to the gig on Friday?
  Tony: Thinking about it... :-)
  Tony: Why? Are you coming?
  Sarah: Thinking about it... :-P
  Tony: I'll come if you come... :-P
  Sarah: Is that a deal or a challenge?
  Tony: Both... LOL
target: Sarah and Tony are hesitating whether to go to the gig on Friday or not.