Definition: 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'.
Input:  Person1:       I think I'm going to go home .  
 Person2:Why ? We just got here .  
 Person1:        I know , but it's 12  
 Person2:12  
 Person1:        Three or four o'clock ?  
 Person2:Yes .  
 Person1:        I never stay out that late . That's too late .  
 Person2:But why is it too late ? It's Saturday night.You have nothing to do tomorrow . Why not stay out and drink with us ?  
 Person1:        Were you so wild when you were still in Taipei , Sharon ?  
 Person2:Yes , I was . And I like living here.People know how to party here . In Taipei , some people know how to party.But here , everyone does .  
 Person1:        What is that they're doing on the couch ?  
 Person2:They're smoking pot . Don't worry about it .  
 Person1:        Pot ? Isn't that marijuana ?  
 Person2:Yes , it is .  
 Person1:        But , Sharon , that's illegal ! The police could come , and we could go to jail .  
 Person2:Don't worry about it . It is true that pot is illegal in America.But the laws aren't as strict as in Taiwan.If people are arrested , and they have a little pot in their possession , they don't go to jail . They just have to pay a fine .  
 Person1:        Really ?  
 Person2:Yes .  
 Person1:        I didn't know you had such wild friends . Do you smoke marijuana too ?  
 Person2:I tried it a couple times . But I don't like it . I like alcohol better.Don ' t worry about them , though . If you don't want to smoke pot , you don't have to .  
 Person1:        I don't want to .  
 Person2:That's alright . But you really should have another drink.People will probably start dancing soon .  
 Person1:        I don't know if I can drink more . I already had two drinks .  
 Person2:You had two drinks at nine o'clock . C'mon , Ann , you are in an American university now ! You have to learn how to drink .  
 Person1:        I thought a university was for studying .  
 Person2:It is . We study hard all week.And then , on the weekend , we party hard . That's the best way to live .  
 Person1:        Alright . I'll have another drink . 

informal