Can I take a message?

Sample conversation:

B= Dinesh A= Mark (roommate)

A: Hello.
B: Hello is Mark there please?
A: No, he’s not here right now.
B: This is Dinesh, Mark’s buddy from the army.
A: Oh.Hi Dinesh.
B: Do you happen to know where he went?
A: He said he was going to Harold’s Department store to buy some parts.
B: Do you know when she’ll be back?
A: He told me he would be back by 3:00.
Can I take a message?
B: Yes. Please tell him there’s a dinner meeting on Friday night.
And could you tell him to call me when he gets in?
A: Sure. Does he know how to get a hold of you?
B: I’m at the library right now.
My number is 250-684-3234.
A: I’ll right. I’ll tell him you called.
B: Thanks a lot. Bye.