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:       Why do you want to spend your summer days in a mountain village ?  
 Person2:I think a mountain village is splendid !  
 Person1:        I don't agree with you . It's too small to live .  
 Person2:It has fresh air , and it is nicer than a big town .  
 Person1:        I disagree , a big town is more lively .  
 Person2:But I like the small mountain village . The big town is noisy . How charming it is when walking along the hill !  
 Person1:        Well , alright , I agree with you about that , but I still prefer a big town . 

informal