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:       Can I help you ?  
 Person2:Yes . I am interested in applying for graduate school in America .  
 Person1:        We have some catalogues from U . S . universities . You may check in the reference stacks over there .  
 Person2:Can you recommend some universities with good graduate schools ?  
 Person1:        Well , generally in the U . S . each university has its own outstanding fields . But the graduate school accepts no applications after January 29th .  
 Person2:Oh , no . It's already February 5th .  
 Person1:        So you have to apply to begin the first semester next year .  
 Person2:I will think about it . 

formal