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:       Have you had any kind of punishment in your college ?  
 Person2:Yes , but it was many years ago .  
 Person1:        What was it for ?  
 Person2:I was a naughty boy and I played hooky . So the school gave me a punishment to clear the classroom for a week . 

formal