Teacher makes a call to her student to inform: “I’m busy tomorrow, so our class will be off”
The student makes a call to his dad immediately: “I’m off tomorrow lets go to picnic!”
The dad makes a call to his secretary immediately: ” I’m busy tomorrow, lets postpone our date to the next day!”
The secretary makes a call to her husband: “Honey, i’m not going out on a business trip tomorrow, lets hangout!”
The husband makes a call to the teacher: “Honey, my wife is off tomorrow, you don’t come.
The teacher makes another call to the student: “Tomorrow we go to school as usual.”