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'd like to talk to you about my grades .  
 Person2:Sure ! What exactly do you have questions about ?  
 Person1:        I am worried that I messed up on a test .  
 Person2:Well , let me take a look at my grade book . How do YOU think you are doing ?  
 Person1:        I think I am doing great , except for that one test !  
 Person2:Well , your scores show that you could do a little better . What do you think you could improve on ?  
 Person1:        I think that I could study a little harder for tests .  
 Person2:Fine ! Please remember that regular attendance is the most important way to begin .  
 Person1:        Yes , I know .  
 Person2:I'm sure you'll do fine . 

formal