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:       Mary , this is your homeroom . It's 213 . Remember that .  
 Person2:What's a homeroom ?  
 Person1:        You sit in there , listen to the morning announcement with other kids , and then you go to your classes .  
 Person2:Cindy , I'm scared .  
 Person1:        But I have to go to my homeroom .  
 Person2:Do we have the same classes today ?  
 Person1:        No .  
 Person2:Do you think the school can put us in the same homeroom ?  
 Person1:        Stop worrying , Mary . You'll do just fine . 

informal