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 have two finals this week and one oral presentation and I'm not ready for any of them !  
 Person2:Sounds like you will be doing some serious cramming till Friday !  
 Person1:        I hate this part of school .  
 Person2:Why did you put it off until the last minute ?  
 Person1:        I didn't mean to . Things just kept taking up all of my time .  
 Person2:Maybe you got your plate too full this semester ? You can change that next semester .  
 Person1:        I think I'd better . I have twenty four credits this time around . That might be a bit much .  
 Person2:I'll say . The regular eighteen is just about all I can handle myself . 

informal