[مستر محمد ديوشي عطا]

1. A : Try to book early

B : Why

A : Because the number of seats on the coach available is limited
Place: Bus stop
SA: Ticket clerk
AB: Traveller
Function: Advising / Asking about and giving reason

2. A: I want to take extra lessons in piano

B : You needn’t. Enough has been taken
Place: Music room
SA: student
AB: Music teacher
Function: Request and polite refusal