Given the task definition and input, reply with output. 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'.

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