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:       Hey , Jack , where's your car ?  
 Person2:I got rid of that clunker . This is my new one .  
 Person1:        Is that right ? This sure beats the old one ?  
 Person2:Hop in , I'll give you a ride .  
 Person1:        Ok . Boy , this looks expensive .  
 Person2:Yeah , it costed a bundle , alright ?  
 Person1:        Wow , this thing can haul .  
 Person2:Yeah , this sucker is the fastest thing I've ever owned .  
 Person1:        I believe it . Hoo , this car corners like it's on rails .  
 Person2:We are on the high way . Find the pound shade ..  
 Person1:        Wow , this car can really burn rubber .  
 Person2:It's a great feeling .  
 Person1:        You made a perfect choice , Jack .  
 Person2:Thanks , Daisy . 

informal