text: Robert: guys, can anyone take my morning shift tomorrow?
  Robert: sorry for late notice, but my son is ill and I must take him to a doctor.
  Mack: Im sorry for you:/ I cant:/ They come to fix my heating system in the morning.
  Sean: I can take it.
  Sean: you start at 7 am, dont you?
  Robert: correct
  Robert: thanks, man!
  Sean: you're welcome
target: Sean will take Robert's 7 am shift. Robert needs to take his son to the doctor.