You sit in awkward silence as you ring up your last customer for the night. He had clearly wanted to make small talk, since he was feeling down, but you had not made an effort to have a conversation.

You tell him the price of his things and bag them up. He fumbles around his large coat looking for his wallet.

"I know I brought it with me.."

He mumbles in a worried tone.

"I must've left it in an isle. Do you want to help me look?"

The question is innocent. He still seems dejected.