text: Steven: Mum, my last class got cancelled, could you pick me up? :D
  Lucy: Son, I'm busy now. You'll need to wait 'bout 40 mins or so
  Steven:  OK, I'll take the buss then :(
  Lucy: If so, buy some milk and eggs on your way
  Steven: Sure, no prob. See you at home
  Lucy: See you sweetie
target: Steven will take the bus home as his class got cancelled. Lucy wants him to buy some milk and eggs.