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:       Hurry up , get in .  
 Person2:I ’ m in , let ’ s go !  
 Person1:        OK , make a left here . . . no wait , I meant make a right . Come on , speed up !  
 Person2:Geez ! What ’ s the rush ?  
 Person1:        Don ’ t worry about it , just drive . Oh , no , the light is about to change . . . step on it !  
 Person2:Are you nuts ! I ’ m not going to run a red light !  
 Person1:        Whatever . Just turn right here . . . . The freeway will be packed at this hour . . . . let ’ s take a side street.Go on ! Get out of our way ! Move , move !  
 Person2:What ’ s your problem ! Geez . Having a fit is not going to help !  
 Person1:        Here , I know a short cut ... just go down here , and we ’ ll cut though Ashburn Heights . Let ’ s go , let ’ s go ! Watch out for that lady !  
 Person2:I ’ m going as fast as I can !  
 Person1:        Yes ! We made it . 5:58 , just before the library closes .  
 Person2:You ’ re such a geek ! 

formal