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'.

Example Input: Person1: What would you say if I told you I was going to quit school ?
Person2:I ' d say , think twice about it . Well , you are not going to quit school , are you ?
Person1: I don't know . I failed my exam .
Person2:What did you get ?
Person1: A B plus .
Person2:That's not bad .
Person1: But I should have aced it . I mean I finished the paper so quickly , thinking it's a piece of cake . But when I knew my result , I was like what ? That can't be true !
Person2:Listen , John . I understand that you are such an excellent student and I know you must have lots of stress , but you really want to give up ?
Person1: No , I don't . I just don't know how to handle this . This is my first time , you know .
Person2:I know . Don't worry . Do you know what you should do ?
Person1: What ?
Person2:You need to blow off some steam . The world is not on your shoulder .
Person1: How ?
Person2:Forget about school and exams . Come over to my house and have fun . I have some really good DVDs .
Person1: Thanks . But I really don't feel like watching movies tonight . I have to get an early start in the morning .
Person2:Then go to bed and have a good sleep .
Person1: I guess that's what I need . Thanks . You're being a really good friend .
Person2:Of course I am . Well , pleasant dreams !
Person1: Thanks , bye .
Example Output: informal

Example Input: Person1: Wake up sleepyhead.The sun is beginning to shine . What a lovely summer day !
Person2:Yeah , clearly blue sky.But it is a bit too hot for me . I don't like heat and humidity .
Person1: It's not that hot . It's cooler than yesterday . Let's go swimming !
Person2:That's a thought . It's still early , and the beach isn't crowded at this time of the day . If we don't stay too long , we won't get sunburned .
Person1: Yeah , sounds like fun . I can wear my new pink bikini .
Person2:There won't be anyone there to appreciate how cute you are .
Person1: Who cares ! Well , the smart guys get there early . That's the kind of guy I want to meet . Let's go !
Person2:If you are going to husband hunting in a bikini , then I want to wear one , too .
Person1: Ok , you could borrow one of mine .
Person2:Thanks , how about the green and black one ?
Person1: No problem . Here it is .
Example Output: informal

Example Input: Person1: Oh , no . It looks like my computer really has caught a virus .
Person2:Why ? Did you open an attachment ?
Person1: Yes , something called " George W . Bush . " An hour later , all I see are pictures of George W . Bush in women's clothes .
Person2:I kind of like it . He looks better that way , doesn't he ? More presidential .
Person1: I preferred the forward with pictures of him side-by-side with monkeys .
Person2:Yeah , their expressions were exactly the same !
Example Output:
formal