Hey, I love to hike the Appalachian trail. It's my favorite hiking trail in the Eastern United States. 
Me too. I go there every summer. Is it one of the most popular trails in the US?
Yes absolutely! It's tough though! Have you done all 2,200 miles of it before? Or just portions?
No just portions. Have you seen any bears or other wildlife there?
Yeah, I see a few animals. Just small animals though, no bears yet thankfully! And lots people, more than 2 million people hike a portion of the trail each year!
Thats a lot of people. I have been seeing some pollution the last time I went.
Yeah, it's sad people don't look after it better. Since it was completed in 1937, after years of work there has been some challenges. Do you hike often? Did you tent there or just a day hike?