So, you're about to talk to your friends, colleagues or business partners in English on the phone, but you are not sure how to start a conversation. Let me give you a few useful phrases most commonly used when you have:
to identify the person you are talking to:
(F) Could I speak to Mark, please ?
(I) Is that Mark ?
Can I speak to Mark ?
to identify yourself:
Thank you for calling ..., this is Mark ( speaking ).