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: He's only interested in harassing you . How can he expect us to have so much time to waste ?
Person2:I almost want to send him a virus to shut his stupid computer down .
Person1: As obnoxious as Bean is , we should still try to finish this case .
Person2:True-well , do you have any forwards for me to send him ?
Person1: Yeah ! Remember that one about putting light bulbs in your mouth ?
answer:
formal

question:
Person1: What do you plan to do for your birthday ?
Person2:I want to have a picnic with my friends , Mum .
Person1: How about a party at home ? That way we can get together and celebrate it .
Person2:OK , Mum . I'll invite my friends home .
answer:
informal

question:
Person1: more and more Chinese are marrying foreigners .
Person2:that's true . But I have a low opinion of those women who go out with foreigners .
Person1: oh , why ?
Person2:I think some Chinese wone marry foreigners for money while others just want to live abroad . There is no true love between them .
Person1: I wouldn't say that's totally true . I've met many happy intercultural couples .
Person2:well , then why aren't there many East-West couples where the man is a Chinese and the woman is a Westerner ?
Person1: I guess it's because the Chinese women are more attractive to Western men .
Person2:or because they are less attractive to to Chinese men .
Person1: what do you mean ?
Person2:you know , usually the woman is in her thirties and she is a left girl .
Person1: a left girl ? What's that ?
Person2:they're called that because they're left behind on the shelf . They're also known by their three H's---high diploma , high salary , and high degree . and they're also known as the three S's single ,
Person1: you have a point here , but I believe some mixed marriages are based on true love .
Person2:that ' for sure but very few .
answer:
informal