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:       Do you think that climate change is responsible for the recent floods ?  
 Person2:It could be . There are floods in this country almost every year , but in recent years they have been more widespread and more frequent .  
 Person1:        It seems that the climate in this country is changing .  
 Person2:The summers are hotter . The last three summers have been the hottest for the past 200 years . There have also been stronger winds .  
 Person1:        I think that the changing climate is a sign that we are causing too much damage to the environment .  
 Person2:I think you ’ re right . Climate change naturally over time , but I think that human activities are speeding up the change . I wish that government would join together and try to resolve the problem .  
 Person1:        Me too . If we don ’ t do something soon , It might be too late . 

formal