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:       Can you read what this says ?  
 Person2:Yes , and you could too if your hair wasn't hanging down in your face .  
 Person1:        Don't dis my hair ! I like it like this .  
 Person2:You like it , but it's getting to be a handicap for you .  
 Person1:        Hey , that's enough about my hair .  
 Person2:I know a great hairdresser not far from here and she is cute too .  
 Person1:        I don't go to hairdressers because they're cute .  
 Person2:Did I mention she's good at cutting hair too ? 

formal