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:       You look upset.What ' s wrong ? 
 Person2:Nothing . It's just one of those days . Everyone at the office is sick and I'm getting blamed for work not being done . 
 Person1:        Maybe you need a vacation or something , or maybe a bonus . 
 Person2:I'm sick of doing other people's job and getting blamed for not doing it right . 
 Person1:        Why don't you talk to your boss about it ? If you talk to him , he will surely understand . 
 Person2:I wish he could understand . You know what , if this goes on , I think I will get stick like everybody else . 

informal