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.
Q: You're welcome. Happy to help! 
 cool! Can you tell me more about it? 
 Sure. Egypt is a country located in north Africa and Cairo its the capital. 
 Oh cool! Can you tell me more about that? 
 Interesting! Can you tell me about their economy?
A: 
Sure. Egypt is a country located in north Africa and Cairo its the capital.