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 about your present pay ?  
 Person2:Basically I get 5,000 RIB every month . It is a well-paid job with satisfying working hours .  
 Person1:        What are your salary expectations ?  
 Person2:I require 6,500 RIB per month as a start . This is my bottom line , the minimum salary I can accept . 

formal