text: Seth: Hi, I've got a spare ticket for Swan Lake.
  Eliza: Did you and Rosie have a fight?
  Seth: No, but she's got the flu and I really want to see this ballet live.
  Jackie: I'd love to go!
  Eliza: Just don't catch the flu too, I really need you to help me with the party next week :)
  Jackie: No worries, I got my flu shot last month.
target: Seth will go to see Swan Lake with Jackie, because Rosie has got a flu. Jackie got his flu shot last month.