Dave: Hello, Jack. This is Dave.
I want to return the book I borrowed from you last night.
Will you be at home at about six o’clock?
Jack: Yes, I will. I will be cooking dinner.
Dave: Oh! Well. Then I won’t come over at six.
Jack: Why not?
Dave: I don’t want to disturb you.
Jack: Don’t worry! You won’t disturb me.
Dave: OK. I will see you at six.