Ellie sighed as she petted her cat. “I can’t believe this storm,” she said. “We should be surfing, and we’re stuck on the couch!” “We’ll just have to figure out something else to do.” said Sam.
“I’ve got it!” shouted Ellie. “If we leave now, we can see the new surf film at noon then hit the surf museum and look at old surfboards.”
“You’re pretty smart for a little sister,” said Sam. “I’ll ask mom if we can borrow the car!”

Which paragraph features dialogue that reveals details about the characters’ relationship?