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:       wow , it that your sports car ?  
 Person2:yes , do you like it ?  
 Person1:        I love it ! I used to always want to drive a green jaguar . Is it in good condition ?  
 Person2:it looks good on the outside , but the inside is a different story . It needs a lot of servicing before it can go out on the roads again .  
 Person1:        what's wrong with it ?  
 Person2:well , first of all , it needs a new engine , which is extremely expensive .  
 Person1:        when's the last time you had it serviced ?  
 Person2:it must have been a few years ago now .  
 Person1:        I thought all cars needed regular servicing on a yearly basis .  
 Person2:they do . Once my son was born , there was no reason to drive this car anymore . It's only a two-seater , you know !  
 Person1:        what else is wrong with it ?  
 Person2:the heating controls don't work anymore , so it always feels like it's about 100 degrees in the car — even in the summer !  
 Person1:        anything else ?  
 Person2:the brakes don't really work that well anymore either .  
 Person1:        why don't you get it all fixed ?  
 Person2:it costs more than you think to run a car , especially when there are so many things wrong with it !  
 Person1:        well , let me know when you can get it fixed . I ’ d love to go for a ride in it ! 

informal