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:       Oh , no !  
 Person2:How dreadful !  
 Person1:        Look at the view from the window .  
 Person2:Oh , dear . That ’ s terrible . Not at all what I expected .  
 Person1:        It ’ s awful , isn ’ t it ?  
 Person2:I can ’ t bear to look at it . I ’ m rather disappointed .  
 Person1:        It can ’ t be helped . 

informal