A: Professor, could I make an appointment with you?

B: I am free tomorrow afternoon between two and four; do you have a particular time in mind? 

A: Two o'clock would be the best time.

B: Fine, do you know where my office is?

A: No, I'm not sure.

B: Remember, it is in the E building on the third floor.

A: I see.

B: Don't worry, it will work out fine once you get there. I'll see you then.

A: I'll see you then.

B: Looking forward to meeting with you!