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'.

[Q]: 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 .
[A]: informal

[Q]: Person1: Do you think I should ask Bob to help ? Will he come ?
Person2:No problem . You know him . He ' s the kind of guy that ' s always willing to go the extra miles .
Person1: That ' s right . But I have bothered him several times .
Person2:I bet he will come .
[A]: formal

[Q]: Person1: You're being childish . Your nose will heal . And so will your pride , if you let it .
Person2:I'll have us ready for Stars.com by the end of next week . After that , I don't know .
Person1: Don't know what ?
Person2:Let's just say there could be some big changes around here .
Person1: Is that right ? Like what kind of changes ?
Person2:You'll see . Oh , yeah , you'll see .
Person1: Come on , grow up . Have you seen Vince around ?
[A]:
informal