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'.
Q:  Person1:       What are you studying all day long for ? It ’ s summer vacation !  
 Person2:I know ! I hate it ! But I ’ m taking this crash course in math .  
 Person1:        Why ?  
 Person2:I have to take my exams for getting into the university , so I need to prepare .  
 Person1:        Do you think it will help ?  
 Person2:It has to ! I ’ Ve been studying every day , eight hours a day ! I don ’ t know , but the school has a great success record .  
 Person1:        Hmm ... Maybe I should sign up too .  
 Person2:I ’ ll pick up an application form for you at school tomorrow . 
A: 
formal