A ; May I speak to Jane?
    -제인과 통화하고 싶어요.

B : Speaking. Who's calling please?
   -전데요. 누구십니까?

A : This is Cheol-su.
    -나 철수야.

B : Hi, Cheol-su. What's up?
   -안녕, 철수. 무슨일이야?