(Since you posted this under my character, I'll respond to it, but I'd recommend re-posting it under the original post if you want to get other people to talk to your character.)
"I'm so sorry," Spencer said reflexively as he felt the other person bump into him. He spun to face the stranger. He was rather startled by the length of her hair, but his face did not show any more surprise than would be expected from a man who had just had someone run into him. "I didn't see you there."