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:       Hi , I ’ m Mary Smith .  
 Person2:Hello , I ’ m the landlord . John Taylor .  
 Person1:        Nice to meet you Mr . Taylor .  
 Person2:Please , call me John .  
 Person1:        O . K . , John . Well , can I have a look at the place ?  
 Person2:Sure . Come on it . We just finished rebuilding everything .  
 Person1:        Oh , it hasn ’ t been painted yet .  
 Person2:No , we ’ re going to get that done next week .  
 Person1:        Well . It ’ s certainly nice . You ’ Ve done a great job .  
 Person2:Thank you .  
 Person1:        The rent is $ 600 a month ?  
 Person2:That ’ s right .  
 Person1:        Well , I think I ’ ll take it . Can I write you a check for the security deposit now ? $ 1200 ?  
 Person2:Yeah . But why don ’ t you come by your office tomorrow to sign the lease ?  
 Person1:        That would be fine .  
 Person2:Thank you . See you tomorrow .  
 Person1:        See you . 

informal