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:       Hi , my name is Ted , what ’ s yours ?  
 Person2:What ?  
 Person1:        I said , I ’ m Ted , who are you ?  
 Person2:Huh ? Oh , my name is Laura .  
 Person1:        Do you somewhere often , Laura ?  
 Person2:Huh ? I can ’ t hear you , the music ’ s too loud .  
 Person1:        Let ’ s go outside and talk . So Laura , do you come here often ?  
 Person2:Hold on , my ears are still ringing from the music ... what was it you asked me ?  
 Person1:        I asked if you come here often .  
 Person2:Sometimes , usually once every few weeks . Do you ?  
 Person1:        No , this is my first time here .  
 Person2:I usually come with a group of friends . We dance a little , have a few drinks , and just have a good time .  
 Person1:        Yeah , that ’ s why I ’ m here . My friends dragged me here , because they think I spend too much time studying .  
 Person2:That ’ s good . It ’ s good to hit the books , but you need to get out once in a while .  
 Person1:        I guess so . But the music is too loud . I don ’ t mind getting out and meeting people , but next time I ’ ll do it in a park . 

formal