Are you (still) there?你在听吗？ /喂!
A: Howard? Are you still there?
霍华德，你还在听吗？
B: Yeah, I'm still on the line.
是的，我听着呢。

Could I leave a message?能帮我传个口信吗？
A: No, Renee isn't home now.
不蕾妮现在不在家。
B: Could I loave a message for her?
你能帮我给她传个口信吗？