Robert: Are you coming home for Christmas?
Zack: Always :-) How are you?
Robert: Good, thanks. 
Zack: I suppose you would like to have a small get-together with your old pal?
Robert: Always :-)
Zack: I'll think about that :-p
Robert: If you find an hour or two in your diary, don't hesitate to contact me :-D The phone number same as ever.
Zack: Rob, I'm going to sacrifice one whole evening for you. Maybe even the whole night. And you demand only 1 or 2 hrs? 
Robert: How kind of you :-)
Zack: We'll get back to that some time in December, ok? It's too soon to plan anyth.
Robert: Sure. Good to know you still remember about us.
Zack: Every year you do your utmost not to be forgotten, Rob, if you know what I mean. Till later :-)
Robert: Cheers!
Zack is coming home for Christmas. Robert wants to meet with Zack. Zack will message Robert in December to schedule the meeting.