It's wrong to ghost your friends.
John's friend Ryan sends him a text asking him to help him move this weekend if he's free, but John has plans already and will be out of town.
John needs to figure out how to react to Ryan's text.
John decides to shoot Ryan a text back saying he's going to be out for the weekend, and can't help.
John decides not to mesdsage Ryan back, figuring Ryan will realize John's busy by the lack of response.
Ryan is sad he can't get John's help, but appreciates John getting back to him.
Ryan think's John's a poor excuse for a friend because he doesn't respond.