I walked into a bar Sam asked me to get into a drinking contest. I was working on another quest, so I turned him down not knowing any better. Yeah, I know stupid in hindsight. Can anyone tell me if he can be found again?

He's always in the same spot where you first met him.

Welcome
He will show up again. have you checked the inn you saw him in last time?

Anyone make the same mistake and able to start the quest?