You ask your friend to go to  Tim  Hortons they say yeah sure. You set up the details you will meet in front of the Tim Hortons on Sunday at 2:15. You are super exuded so you get ready and go 15 minutes early you wait and wait soon your friend is 30 minutes late. so you text them they don’t answer. you wait for 30 more minutes they don’t show so you go home. this is a none reliable friend. A reliable friend would show up 10 minutes early and ask if the plan is still on in the morning.