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:       Are you sure Lucy has it bad for you ? If she does , she will certainly bend over backwards for you . But if she doesn't , it would be a job to change her . 
 Person2:I don't know whether she has it bad for me , but she enjoys being with me . 
 Person1:        And do you really love her ? 
 Person2:I think I do . I don't think I can be happier with another girl . 

formal