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:       I absolutely love what you're wearing today .  
 Person2:You do ? I just bought this outfit a couple days ago .  
 Person1:        Seriously , it looks really nice on you . Where did you buy it from ?  
 Person2:I bought it from the Macy's at the Santa Anita mall .  
 Person1:        I really like that outfit .  
 Person2:Thanks . I think you look nice today , too .  
 Person1:        Thank you . I just bought these new shoes earlier today .  
 Person2:Those are nice . What are they ?  
 Person1:        These are some Chucks .  
 Person2:Those are great . How much were they ?  
 Person1:        I got them for forty .  
 Person2:I think I might go and find me my own pair of Chucks . 

informal