Telephoning

Answering

Good morning/afternoon

This is... / ... speaking

How can I help you?

Making an appointment

When would be possible/convenient for you?

What time could we meet/are you free?

When would you like to meet?

Changing a meeting

I'm sorry, I have to cancel the appointment on...

Could we arrange another time?

I'm afraid I can´t manage our meeting

Calling

Good morning this is...

I'm calling to...

Could I speak to...?

I would like to speak to...?

Leaving a message

Would you like to leave a message?

Could I leave a message?

Could you tell ... that I called?