I’m calling to say goodbye to you.
I’m calling to tell you that the concert begins at 7:00.
I’m calling to book two tickets for tonight’s film.
I’m calling to warn you of the coming storm.
Coach: Hello! Is this Peter?
Teammate: Yes. Hello! Coach.
Coach: I’m calling to remind you that we have practice tomorrow.
Teammate: What time does it begin?
Coach: We’ll start at 6 a.m. So don’t be late.