M: Don't worry. I'll be seeing him in an hour. I can ask him for his email address when I see him. W: That's very kind of you, Mr. Baker. What was said before this conversation?
The answer to this question is:
W: What a memory I have! I did write down the mobile number on a sheet of paper when I answered the phone this morning, even that Mr. Smith's email address, and now it is nowhere to be found!