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:       Herman , why are you so excited ?  
 Person2:I have met a beautiful girl .  
 Person1:        Have you fallen in love ?  
 Person2:Yes . At first sight .  
 Person1:        Can you describe the situation at that time ?  
 Person2:At that time her back was ramrod straight as she sailed by , her tone is best , neither over-passionate , nor too cold .  
 Person1:        What's her outlook ?  
 Person2:She was pretty , her hair was the color of rich dark chocolate , waving gently to her shoulders . Her complexion was clear and golden . 

informal