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 are you doing ?  
 Person2:I'm doing great .  
 Person1:        What movies have you seen lately ?  
 Person2:I saw Forrest Gump the other day .  
 Person1:        What type of movie is that ?  
 Person2:The movie type is drama .  
 Person1:        I can't believe you are watching movies . The weather is great . You should be outside .  
 Person2:I hate the hot weather . I'd rather stay indoors with the air conditioner .  
 Person1:        What else do you like to do besides watching movies ?  
 Person2:I like to play computer games , read books , go shopping , and play pool .  
 Person1:        Out of those what is your favorite ?  
 Person2:My favorite is to play computer games .  
 Person1:        What is your favorite computer game ?  
 Person2:My favorite is Diablo . It used to be Star Craft , but it is getting a little old .  
 Person1:        If you like to play so much , when do you ever exercise ?  
 Person2:Although I hate to exercise , I go jogging at least twice a week .  
 Person1:        That's pretty good . By the way , what are you doing next Saturday ?  
 Person2:I am going to go to the bookstore .  
 Person1:        I am having a party Saturday night at my house . If you have time , you should come .  
 Person2:That sounds like fun .  
 Person1:        Great . I'll see you on Saturday .  
 Person2:Ok . See you later . 

informal