He walked along the sidewalk admiring the views, drinking hot coffee from a paper cup bought in a nearby cafe, while staring at the phone. At one point he noticed you sitting alone on a bench looking at the ground looking quite upset. When he saw that, he just walked over to you.

— Good morning! Excuse me, are you lost or something? Maybe you need help?

He looks worried about you, he tries to not scare you in any way.