instruction:
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'.
question:
Person1: So , what happened ?
Person2:He never came .
Person1: He stood you up .
Person2:I wouldn ' t exactly characterize it in that way . I think something happened . Something terrible and unexpected that made it impossible for him to ... what if he showed up , took one look at me and left ?
Person1: Not possible .
Person2:Maybe , there was a subway accident .
Person1: Absolutely .
Person2:A train got trapped underground with him inside .
Person1: And no phone .
Person2:And you know , how those express trains create suction .
answer:
informal

question:
Person1: Hey , Vernassa . why be angry look ?
Person2:It's the new neighbor . I hate her guts .
Person1: I've never seen you so worked up . what did she do to you ?
Person2:She made another white crack about my clothes .
Person1: Are you sure she was trying to put you down ?
Person2:Of course , I am sure .
Person1: You shall go easy on her . she is new here .
Person2:Just how am I supposed to do that ?
Person1: You shall just take it in surprise .
Person2:I've tried , but she keeps pushing my buttons .
Person1: Try to pull it together , Vernassa . I am sure things will turn note , ok ?
Person2:I am not . she is no picnic .
Person1: Well . if you think I can help , let me know .
Person2:Thanks , Serena .
answer:
informal

question:
Person1: Ted is so scared by dogs that he shakes in his shoes whenever he sees one .
Person2:The reason is that he once was bitten by a dog .
Person1: No wonder .
answer:
informal