In this task, the input is a set of dialogues between a user and an assistant. You need to find the dialogue that is basically a response given to a question or an aspect of the user.

Ex Input:
Chicago's first railway opened in 1848. They are called Galena and Chicago Union Railroad as well as the Illinois and Michigan canal.
You're welcome.
Great. Any other info regarding history or infrastructure?
That sounds like a crazy idea! Thanks so much for your help today!
Chicago P.D. is my favorite! Had no idea it was in Chicago. Just kidding! Haha. What can you tell me about Chicago's infrastructure?

Ex Output:
Chicago's first railway opened in 1848. They are called Galena and Chicago Union Railroad as well as the Illinois and Michigan canal.

Ex Input:
Wow, that seems more diverse than I would've expected. Amerindian is a word you don't hear everyday. Out of curiosity, is there anything else you could share with me about their culture?
Peru 's distinct geographical regions are mirrored in a language divide between the coast where Spanish is more predominant over the Amerindian languages, and the more diverse traditional Andean cultures of the mountains and highlands.
Peru has proven to be more interesting that I realized. I think that I have enough of the information I was looking for, so unless you happen to have any other interesting facts about Peru I think I'm good for now.
Now you're just making me hungry, and I appreciate all the facts you've been able to provide me so far. Before I conclude my research though, have you happen to come across any interesting facts about the country's demographics, or how all those cultures are spread amongst the demographics?
The largest lake in Peru, Lake Titicaca, is between Peru and Bolivia, high in the Andes.

Ex Output:
Peru 's distinct geographical regions are mirrored in a language divide between the coast where Spanish is more predominant over the Amerindian languages, and the more diverse traditional Andean cultures of the mountains and highlands.

Ex Input:
That's really helpful, thanks! Can you tell me about the history?
Thank you.
Vietnam is a country on Southeast Asia. The neighboring countries of Vietnam are China, Laos and Cambodia.
Hey, can you please tell me about Vietnam?
I'm sorry, I don't understand.

Ex Output:
Vietnam is a country on Southeast Asia. The neighboring countries of Vietnam are China, Laos and Cambodia.