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:       And we got a 50 thousand dollar ticket for construction workers peeing off the roof . 
 Person2:That ’ s great . Is the electrician here today ? 
 Person1:        See , I just told you he hit a deer . Man , I knew you weren ’ t listening to me . 
 Person2:You ’ re right . I wasn ’ t . I hear nothing . 
 Person1:        Nothing ? 
 Person2:Not a sound on the city streets , just the beat of my own heart , I think that ’ s how it goes , something like that . 
 Person1:        You and Patricia got engaged , didn ’ t you ? You can tell me . 
 Person2:Engaged ? 
 Person1:        Come on . 
 Person2:Are you crazy ? 
 Person1:        What ? I thought you liked Patricia . 

informal