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:       How do you put this seat back ? I know there is a lever somewhere .  
 Person2:What are you doing ?  
 Person1:        I'm getting dressed , what does it look like ?  
 Person2:It looks like you are about to get dressed . Did you forget we are in a car on the road ?  
 Person1:        I'm good at this . Nobody will see anything .  
 Person2:Are you kidding ? You're going to cause an accident just from people gawking !  
 Person1:        All right , pull over at that service station and I'll dress in the ladies ' room .  
 Person2:That will be my pleasure . 

informal