Retrieve Messages use case (cont.)

4. User chooses "retrieve msgs" option
   • Telephone passes it on to Connection
5. Connection asks Telephone to speak msg menu
6. User types in the "listen to current message" option
   • Telephone passes it on to the Connection
7. Connection gets first Message from current Mailbox
   • sends its contents to the Telephone
   • Add "retrieve messages" responsibility to Mailbox)