history: I was once in a grocery store and the fire alarm went off. A lady next to me had 2 kids with her and she asked me to carry one of her kids so we can escape the grocery store. I felt that she felt comfortable around me. 
current: It was a hot summer day and the sirens went off in the grocery store. I was about to leave the grocery store until the lady next to me with 2 kids stopped me to ask if I can assist her. I carried one of her kids out of the grocery store. It seemed that she felt comfortable around me. 
next: Wow! You must have a very trusting face! That was very nice of you to help her.