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 heard you are going out with John ? 
 Person2:Yes . To be frank , I really love him to death . 
 Person1:        You are so lucky . 
 Person2:Why do you say that ? 
 Person1:        Why ? Are you kidding me ? A guy like that is hard to find . Few boys are so caring , so patient , and did I mention he is hottie ? 
 Person2:You really think so ? 
 Person1:        Totally . I am saying it from the bottom of my heart ! And it's obvious that he ’ s head over heels in love with you , too . 
 Person2:I sure hope so . 

informal