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: Hey ! What's up ?
Person2:Hi , John ! I haven't seen you for ages .
Person1: Yeah , I've been out of town .
Person2:So how have you been ?
Person1: Great ! Work is really busy now , but it's fun .
answer:
informal

question:
Person1: I really hate to say this , but don't go away mad , just go away .
Person2:I knew this would happen some day .
Person1: Then , why didn't you try to prevent it in the beginning ?
Person2:Well . It's not all my fault , Anna . You are responsible , too .
Person1: I don't want to argue anymore . Please get out of my life !
Person2:I think we can still talk .
Person1: No way ! Please don't follow me around .
Person2:Talk it easy , Anna . You really don't hate me . do you ?
Person1: Yes , I do . Leave me alone !
answer:
informal

question:
Person1: How may I help you ?
Person2:There ' s a problem with my check .
Person1: What problem ?
Person2:My check for $ 100 bounced .
Person1: Are you sure you have $ 100 in your checking account ?
Person2:I thought I did .
Person1: I ' ll check for you .
Person2:Thank you very much .
Person1: It looks like you only have $ 57 left in your account .
Person2:That can ' t be right !
Person1: That ' s what my computer is showing .
Person2:All right . Thank you very much .
answer:
informal