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: Hi , how are you doing ?
Person2:I'm fine . How about yourself ?
Person1: I'm pretty good . Thanks for asking .
Person2:No problem . So how have you been ?
Person1: I've been great . What about you ?
Person2:I've been good . I'm in school right now .
Person1: What school do you go to ?
Person2:I go to PCC .
Person1: Do you like it there ?
Person2:It's okay . It's a really big campus .
Person1: Good luck with school .
Person2:Thank you very much .
answer:
informal

question:
Person1: What's the matter , Lisa ? You don't look too good .
Person2:I just found out that my husband is cheating on me .
Person1: You mean Mark ? He seems like such an honest guy .
Person2:That's what I thought . It seems that he's been seeing someone else for about two months .
Person1: Two months ? How did you find out ?
Person2:I asked for leave and was at home when the telephone rang . I picked it up and a girl asked to talk to Mark . She then asked if I was his sister , and I said no , I was his wife . She hung up immediately .
Person1: So you asked him about the girl who called ?
Person2:Yeah , he first said it was someone from work . He gave me a lame excuse , and so I pressed him on it .
Person1: What'd he do ?
Person2:He kept trying to make stupid excuses , and then broke down and admitted to a small indiscretion .
answer:
formal

question:
Person1: Are you ready ?
Person2:Yes .
Person1: Who can tell us something about the author's life ? Volunteer ?
Person2:The author was a famous writer , and he was also a politician . He was born in 1911 and died in 1985 .
Person1: Very good . Sit down , please . Susan , what's the general idea of the text ?
Person2:Can I answer it in Chinese ?
Person1: No , you can't . This is an English class , and you have to express yourself in English .
Person2:Let me have a try . The author takes the characters peculiar to the British people as a topic to show that they are quite different from other nationalities . They are quiet , shy and reserved ...
Person1: Excellent . Class is over . Let's have a break .
answer:
informal