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:       How may I help you ? 
 Person2:I ’ m having a problem . 
 Person1:        What is it ? 
 Person2:I apparently owe some fees , but I never got the bank statement . 
 Person1:        I do apologize for that . 
 Person2:My fees went up , but I didn ’ t even know I had fees to pay . 
 Person1:        I see your problem . 
 Person2:What are you going to do about it ? 
 Person1:        I will cancel the fees you owe . 
 Person2:I don ’ t have to pay any fees ? 
 Person1:        You ’ ll only have to pay the initial fee . 
 Person2:That ’ s fine . I appreciate your help . 

informal