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:       My boss wore a real stupid tie to work today . Can you guess why ?  
 Person2:He isn't a man of good taste for clothes , is he ?  
 Person1:        He is , but I didn't mean that . His daughter bought him a tie as a Father's Day gift , and he was very happy to wear it and show it off to us in the office .  
 Person2:It must be hard being a father .  
 Person1:        No , it's great being a father , seeing your children growing up and loving you and admiring you .  
 Person2:Maybe you'll only feel that way on Father's Day . 

formal