Can you go into more detail please? What phrases do you want to be able to say? Going by what you already wrote, you can say "Where are you from?" and "May I ask who is speaking?". Here's one random example of a phone conversation between two people that know each other: *phone rings and is picked up* Person 1: "Hello, this is --name-- speaking" Person 2: "Hi, it's --name-- here. I was just wondering if you had a minute to talk?" Person 1: "Yes that's fine. How are you?" Person 2: "I'm well thanks, but I'm worried about the exam tomorrow. Could you help me out with one of the topics?" Person 1: "I'm sure you'll be fine! Which topic?" etc, etc... So the conversation might go on about the exam topic for a while. Then the two friends will say goodbye like this: Person 1: "Alright, I better go since I have a lot of study to be doing. I hope your exam goes well! See you!" Person 2: "Thanks for your help! See you later!" Hope that helps.

What? 1st You dial a number. 2nd You talk into the phone. If you want a better answer you'd better go into more detail.