Upon Jack's request, Sora gladly agreed to head out and join him and his friend for a bit of ice cream. He didn't know this Rinoa person, but he did know Jack and he loved ice cream. Plus, meeting new people? It could be fun sometimes. Of course, that depended on the person. But if Rinoa was a friend of Jack's, then Sora figured that the meeting would probably turn out well. He'd had fun with Jack's pirate friends before when he visited the Carribean. He trusted that the pirate had good taste in companionship.
So Sora headed out to the Dairy Queen. They didn't have those back where he was from, so he didn't know much about the ice creams that they had, but Sora would gladly settle for any form of the treat at the moment. Dairy Queen would have to do.
Spotting Jack, who looked slightly out of place in comparison to the other people wandering about, Sora bounded up to him and, with a flash of a smile and a wave, he said, "Jack!"