Enhancing Tone in Dialogue

The following passage reflects a conversation between two friends discussing their plans for the weekend:

"What do you want to do this Saturday?" Lucy asked. "I was thinking we could go hiking if the weather is nice."

Sam replied, "Hiking sounds great! I haven’t been in a while but it’s always refreshing. Besides, we could take some beautiful photos along the way!"

Lucy smiled and added, "Yes! And it would be a nice escape from our routine. We deserve a break from city life."

In the above conversation, which phrase best enhances the overall tone of enthusiasm and spontaneity?