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:       What is up ?  
 Person2:Look at the dishes ! I have told you three times to put away these dishes . But now ...  
 Person1:        Oh , don ’ t be angry . I just thought you might need them sometime .  
 Person2:I have told you that I don ’ t need them any more . The thing that really annoys me is that you played dumb with me . 

formal