text: Charles: hey betty
  Charles: i'm outside your place
  Charles: can I come in?
  Betty: i'm not home, sorry
  Charles: i should have called before i dropped by
  Betty: that would've been a good idea, lol, :-P
  Charles: do u know what time you'll be here?
  Betty: not sure
  Betty: i'm pretty swamped up at the library
  Charles: mmmm
  Charles: what to do what to do
  Betty: ¯\_(ツ)_/¯
  Betty: u know what? stay there, i'll met u there
  Charles: awesome thanks!
target: Charles wants to come in Betty's place but she's busy in the library now. Betty eventually decides to meet Charles where he is.