person A: I was at the store the other day and some old man offered to pay for my drink! He said he didn't want anything in return_comma_ he was feeling generous!
person B: Wow. I wish something like that would happen to me. That is so cool.
person A: It was! I just wish I could do something to repay him. I hope I see him again.
person B: Maybe you can pay it forward next time you see someone buying a drink.