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:       How do you usually spend your leisure time ? I mean , do you have any special interests out of your job ?  
 Person2:Of course . You see , almost everyone has some kind of hobby .  
 Person1:        Yeah , you ’ re quite right and what ’ s your hobby ?  
 Person2:I like taking photos out of doors .  
 Person1:        Oh , photography , It ’ s really a good hobby .  
 Person2:Yes , I usually develop and print all my own photos .  
 Person1:        You yourself have a photo studio ?  
 Person2:Yes , simple as it is . It does work . 

informal