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:       The government has to face a lot of social problems now .  
 Person2:I think it is unemployment that gives rise to such social problems .  
 Person1:        But it is very difficult for any government to handle it efficiently .  
 Person2:You are right . 

informal