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'.

Ex Input:
 Person1:       But Sue is indeed beaut . Men can hardly resist such a knock-out .  
 Person2:Birds of feather flock together . You must be one of these men .  
 Person1:        I know little of her . I only think she ’ s pretty and intelligent . Of course , she ’ s diligent , too .  
 Person2:That ’ s enough for you to worship the ground she treats on . 

Ex Output:
informal


Ex 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 . 

Ex Output:
formal


Ex Input:
 Person1:       Hello , John . How are you ?  
 Person2:I'm fine , thanks . And you ?  
 Person1:        Very well , thanks . Nice to see you again . I haven't seen you for a long time . What have you been doing lately ?  
 Person2:Oh , nothing much really . And how is everything with you ?  
 Person1:        Fine , thanks . I've been busy lately .  
 Person2:What have you been doing ?  
 Person1:        I've been studying for my exams . My school exams will begin next month .  
 Person2:Really ? Good luck for them .  
 Person1:        Thanks . And how are your parents ?  
 Person2:They're both very well , thanks .  
 Person1:        Where are you going now ?  
 Person2:I'm going to do some shopping . Why don't you come with me ?  
 Person1:        I can't . I have to meet someone .  
 Person2:It's been nice talking to you .  
 Person1:        Good-bye . See you again sometime . 

Ex Output:

informal


