Who is asked to call back? What is the date of the meeting?

M: Peterson and Taylor. Can I help you?
F: Yes, this is Isabel Hawkins from R & D. Can I speak to Dorothy Borrow, please?
M: I am afraid she is out at the moment. I am the secretary, Francis Gregory. Can I take a message?
F: Yeah, ask her to call me back this afternoon.  My number is 345 -517 -7563. Thank you.
M: You are welcome.

F: Tom, I’m still trying to organize our next sales meeting. Sarah’s away on the 17th of March, of course.
M: Well, I can’t make the 17th now either, but Peter and Jane are both free on the 22nd,  so can we meet then?
F: That’s fine. I know Sarah won’t be free on the 30th and we do all need to be there. I’ll let the others know.