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:       Excuse me , Professor . I am going to miss next week's class .  
 Person2:Is this something that you could schedule for another time ?  
 Person1:        No , I have to do this ; it's important !  
 Person2:Have you arranged for someone to take notes for you ?  
 Person1:        I've made arrangements with a friend to help me .  
 Person2:You know that I only allow one absence per semester , don't you ?  
 Person1:        Yes , I know .  
 Person2:Write down your name and the date on a piece of paper and give it to me .  
 Person1:        OK , I can do that .  
 Person2:Well , have a good day off from class . 

formal