I had an almost identical story happen to me but it was outside a liquor store. This guy (looked really young for his age) came up and started asking me if I knew anything about beer and which one would be a good one. I must have stood there for 20 minutes explaining all the choices there were in beer. He was VERY grateful but said that he was watching for a friend to pass by and just was afraid to go in and get the beer I had suggested because he may miss his friend. So he asked if I wouldn't mind going in and getting it for him if he gave me some money. So I did. He was VERY grateful and I was happy to help the guy out.
The above story is fictitious and I made it up... I like the OP's story much better. OP you did a great job, seriously.
The above story is fictitious and I made it up... I like the OP's story much better. OP you did a great job, seriously.