I need to call my professor[ 2025. 08. 30 ]
A : I need to call my professor, but I’m not sure of the number.
B : Since you don’t know the extension number you have to dial the operator.
A : 교수님께 전화를 드려봐야 겠는데 번호를 모르겠어.
B : 우선 교환원에게 걸어 봐.