单项选择题

M:Good morning. Could you ring Mr. Grant for me, Mr. Charles Grant. He’s staying here. I have an appointment. He said to get reception to ring when I arrived.
W:Yes, just let me Hookah, Mr. Grant, Room 117.

Where did this conversation take place()

A. In a hotel
B. In a hospital ward
C. In an office building
D. In an apartment building