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:       Will you be voting ?  
 Person2:I will . Will you be voting ?  
 Person1:        Well , when is the election ?  
 Person2:You don ’ t know that ?  
 Person1:        I just don ’ t know .  
 Person2:It ’ s this Tuesday .  
 Person1:        You can ’ t be serious .  
 Person2:Why would I joke ?  
 Person1:        Thanks for telling me .  
 Person2:You should ’ Ve known already .  
 Person1:        I forgot .  
 Person2:As long as you go vote , that ’ s all that matters . 

informal