Call a lonely person and let them know that you are thinking of them
1-Invite them along to a regular get-together you might be having with another friend.
2-Ask them if they want to come with you to run an errand. You can chat and get to know each other.
3-Ask them over when you have a family dinner.
4-Help them make a connection by introducing them to your other friends.
5-Call to check in on them occasionally.