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'm feeling wonderful .  
 Person2:Are you crazy ? The papers make everybody listless . I don't think you are the exception  
 Person1:        I'm no exception , and that's why I spent a whole afternoon in the swimming pool .  
 Person2:I'd better exercise my body too.My limbs are rusty now . 

informal