Hello. Can I help you?
  Yes please, Iíd like to speak to Michelle Grant
  Iím afraid sheís out of the office at the moment.
  Would you mind taking a message? This is Dave Winter. Could you ask her to ring me after lunch?
  Iím sorry, I didnít catch your surname.
  My nameís Winter. Dave Winter.
  Can I take your phone number please?
  Certainly, itís 0208 495 6737
  Right, thatís fine. Iíll make sure she gets the message.
  Thank you for your help. Bye.
  Youíre welcome. Bye now.