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:       Do you think what I did to Elvin was out of line ?  
 Person2:You could have tried to explain to him about the new programmers .  
 Person1:        Elvin doesn't want any programming help . He wants all the glory for himself .  
 Person2:You might be right . He does think pretty highly of himself .  
 Person1:        Did you hear the names he was calling me ?  
 Person2:I heard . But did you have to tear out his nose ring ? 

formal