Hello, Friendship Helpline. Who's calling, please?

你好，友谊热线。请问是谁在打电话？

Hello? It's Sarah Who's calling?

喂，我是莎拉，谁打电话给我呢?。

May I ask who's calling?(This is Judy.)

请问你是?我是茱迪.

Let the phone tell you who's calling, so you can decide if you want to answer it or not.

让电话告诉您是谁的来电，如此您就可以判断是否想接。