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:       I've got some bad news about the bike you lent me .  
 Person2:What's that ?  
 Person1:        I fell on the way to school , and your bike got scratched . I'm really sorry .  
 Person2:Don't worry about it . It's not new , it already has a few scratches . Did you get hurt ?  
 Person1:        No , thank you .  
 Person2:That's the most important thing .  
 Person1:        It's kind of you to say . I feel a little stupid .  
 Person2:Forget about it .  
 Person1:        When you lent me the bike , it looked brand new , almost anyway .  
 Person2:Maybe , but really I have fallen a couple of times and it's been hit once or twice as well .  
 Person1:        I appreciate that , thank you . 

informal