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:       Hello , Mrs Turnbull . How are you ?  
 Person2:Fine , thanks . How's your boy , Jack ?  
 Person1:        He's a bit tired . You know , he goes to school at eight o'clock every morning.He doesn't get home till after four . then he does his homework after tea . It often takes him a couple of hours to finish  
 Person2:Poor boy . They work hard at school nowadays , don't they ? Does he like it ?  
 Person1:        School , you mean ? Yes , he does . He likes his teachers , and that always makes difference .  
 Person2:Yes , it does . Does he go to school by bus ?  
 Person1:        No , he walks . He likes walking . He meets some of his friends at the corner another go together .  
 Person2:What does he do when it rains ?  
 Person1:        My husband takes him in the car . He passes the school on the way to the office . 

formal