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:       Do you have any plans for tomorrow night ? 
 Person2:Not really . I wasn thinking of maybe going to a movie . Do you want to go with me ? 
 Person1:        Sure . What movies were you thinking about going to ? 
 Person2:Have you heard of Hot Fuzz ? 
 Person1:        Yes . Isn't the director of that movie the same guy who directed Shaun of the Dead ? 
 Person2:That's the one . It's an actioncomedy . What do you think ? 
 Person1:        To be honest , I didn't really like Shaun of the Dead . Besides , I like movies with a happy ending best . 
 Person2:What do you have in mind ? 
 Person1:        I was thinking of seeing You , Me and Dupree . It's a typical Hollywood blockbuster . 
 Person2:Isn't that the chick flick with Kate Hudson and Owen Wilson ? 
 Person1:        Yeah , I suppose you wouldn't want to see that , huh ? 
 Person2:Not really . Do you like biographical / drama films ? 
 Person1:        It depends on who the film is about . Which movie did you have in mind ? 
 Person2:Anne Hathaway is in a new movie called Becoming Jane which is based on a true story about Jane Austen . 
 Person1:        That sounds fantastic ! What time is it playing ? 
 Person2:It's on at 8 pm at the Phoenix Theatres . I have a membership there , so I can book the tickets ahead of time . 
 Person1:        Great . Shall I meet you there around 7 forty-five tomorrow night ? 
 Person2:Sounds good . I'll see you then ! 

informal