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:       Any plans tonight ? 
 Person2:Not really , do you ? 
 Person1:        Well , I am wondering if we took a hang-out for a drink or something . You know , I just came back from a really tough interview . I was quite nervous during the interview . I really want to have the job . Right now , I am still a little on the edge . I am not sure if I could convince them during the interview . 
 Person2:Take it easy . It is all over now . How was it going , anyway ? 
 Person1:        I don ’ t know . I think I did well in the paper exams . I was prepared to answer a lot of questions , but they didn ’ t ask those as I expected . To my surprise , the manager tried to talk about the Chinese poesy with me . 
 Person2:That ’ s strange . But probably , it is the new interview technique they call it “ Getting to know you more personally ” . What about your answers ? 
 Person1:        Just did my best . 

informal