01 Decline an invitation
02 Are you doing anything tomorrow?
03 Future with present continuous and be going to
04 Free-time activities and events
05 Accept or refuse?
06 Plans for the weekend
07 Can I take a message?
08 Messages with tell and ask
09 Text message requests
10 Reduction of could you and would you
11 Messages
12 Who's calling?
13 Cell Phone Trouble!