Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.
Input:  Person1:       Tell me , what do you enjoy doing in your spare time ?  
 Person2:I enjoy drawing and painting .  
 Person1:        You know how to draw and paint ?  
 Person2:Yes , I do .  
 Person1:        When did you learn how to do that ?  
 Person2:I learned back in high school .  
 Person1:        Oh , so you took an art class ?  
 Person2:Yeah , I loved that art class .  
 Person1:        I see that you're pretty talented .  
 Person2:Thank you very much .  
 Person1:        I wish I had a talent like that .  
 Person2:I'm sure you have a talent . It's just hidden . 

formal