Should she go up to the booth and talk to him? Nah, that might be weird... But he waved back! He might want to talk to her.

...Then again, she didn't want to distract him while he was in the middle of... uh, working... but she was new to the area and hadn't had the chance to really talk to anyone yet. He was in her class, and well, what better time to get to know someone than the carnival! Okay it might be pretty weird to get to know someone at a kissing booth but you know what!!

She got in line.