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:       Why did Tom quit the job ?  
 Person2:He said his present job seemed to be a blind alley .  
 Person1:        If he doesn't change his attitude toward his work , I don't think a new job can make any difference . 

formal