编写一个文学作品开头，包含一些对话
主题：一个意外的旅程
"Hurry up, we're going to be late!" Samantha shouted as she packed the last few items into her backpack. 

"Where are we even going?" asked her best friend, Tom. 

"It's a surprise," Samantha replied with a grin. "Just trust me, okay?" 

Tom rolled his eyes but picked up his own backpack and followed her out of the door. They walked for a while before Samantha finally spoke again. 

"We're heading to the airport. We're going on a trip," she said, her eyes sparkling with excitement. 

"What? How did you even manage to plan this?" Tom asked, incredulous. 

"I won a vacation package in a contest," Samantha said with a shrug. "I didn't know when I was going to use it, but then I thought... why not now?" 

Tom grinned, feeling the thrill of adventure beginning to bubble up inside him. "Lead the way," he said. And with that, they set off on an unexpected journey that would change their lives forever.