text: Bess: Ooops! Anton, can you change my reservation so that it starts on the 6th?
  Anton: We have guys staying till 6th. Can you come on the 7th?
  Bess: Sure. No pro. Thank you!
  Anton: Pleasure.
target: Bess wants to change her reservation so that it starts from the 6th. Anton still has guests staying until 6th, so Bess will come on the 7th.