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: I don't know what to do about the people who live in the flat above me !
Person2:Why ? What are they like ?
Person1: They're incredibly selfish . They ' re always up until the wee hours of the night playing their music so loudly that I have to wear earplugs in order to fall asleep !
Person2:Have you ever talked to them about it ?
Person1: I tried to introduce myself to them when they moved in , but they were so arrogant that I didin't want to ever talk to them again !
Person2:What did they say ?
Person1: They both just talk about how great they are all the time .
Person2:They soud like the neighbours from hell !
Person1: They are ! Besides being loud and arrogant , they're also terrible gossips . They're always talking about everybody else in the apartment .
Person2:I thought you didn't talk to them much .
Person1: I don't , but they talk so loudly that I can hear what they're talking about from my bedroom - and it's not very nice .
Person2:What do the other people in your apartment think about them ?
Person1: Most of my other neighbours are scared of them .
Person2:Maybe you should think about moving .
Person1: I can't afford to move right now .
Person2:Well , perhaps you should have a party and try to get to know them better . Maybe once you get to know them , they'll turn out to be more sensitive .
Person1: I think you're being a bit optimistic . If you met them , you'd understand .
Person2:Well , I don't know what else you could do then . Do you think bribing them with chocolate would work ?
[A]: informal

[Q]: Person1: Hi , Mary , it ' s been a long time
Person2:Hello , my old friend . Long time no see . How are you doing ?
Person1: Well , I ' m doing okay . And how about yourself ?
Person2:Not so well . To be honest with you , I broke up with Tom .
Person1: Oh . I ' m sorry to hear that . What happened ?
[A]: formal

[Q]: Person1: What date is it today ?
Person2:Why ?
Person1: Look at the girls in the street . They all have a bunch of flowers.Is it Valentine's Day ?
Person2:Oh , yes ! I completely forgot about it .
Person1: Did you have a fight with Jack ?
Person2:No , but now he'll be in trouble . What's a boyfriend for ? To forget about Valentine's Day ?
Person1: Come on , dear ! You forgot it , too .
Person2:You know , it's OK for a girl to forget these " big days " , but for a guy , to do that is unforgivable .
Person1: Is that your phone ?
Person2:Oh , it's Jack . Excuse me .
Person1: Wow ! Good timing .
Person2:He asked me out to a dinner tonight . How about joining us ?
Person1: Come on ! Three's a crowd !
Person2:So what ?
Person1: Just go ! It's Valentine's Day !
[A]:
informal