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:       Hi , Doris . You look a little bit down . What's the matter ? 
 Person2:Well , I'm leaving Japan and I'm going back to London , tomorrow . 
 Person1:        Really ! 
 Person2:Yeah . 
 Person1:        How do you feel about that ? 
 Person2:Well , I do feel quite down because I am going to miss Japan after being here for 9 months , in Japan . I am going to miss it so much , cause I've had a great time here . 
 Person1:        Mm , so what are you going to miss about Japan ? 
 Person2:Oh , I am going to miss the people , the food , the night life . Especially the nightlife . 
 Person1:        What especially about the night life are you going to miss ? 
 Person2:Well , I really like dancing . And I enjoy going out to night clubs and to restaurants and eating Japanese food also and I'm really going to miss that because it's very different to London . 
 Person1:        How are the clubs different in Japan than in London ? 
 Person2:Well , here there are many different clubs you can get into , for free , you don't have to pay , some of them . In London it's really expensive for drinks and an entry fee . 

informal