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:       Hello everyone ! I ’ m Rick Fields , and here with me is Bob Copeland .  
 Person2:Howdy folks , and welcome to today ’ s game ! You know , Rick , today is a key game between Russia and Canada . As you know , the winner will move on to the finals .  
 Person1:        That ’ s right , and it looks like we ’ re just about ready to start the match . The ref is calling the players for the face-off ... and here we go ! The Russians win possession and immediately set up their attack ! Federal gets checked hard into the boards !  
 Person2:Maurice Richard has the puck now , and passes it to the center . He shoots ! Wow what a save by the goalie !  
 Person1:        Alright , the puck is back in play now . Pavel Bure is on a breakaway ! He is flying down the ice ! The defenders can ’ t keep up ! Slap shot ! He scores .  
 Person2:What an amazing goal ! 

Ex Output:
informal


Ex Input:
 Person1:       That girl looks very attractive , doesn ’ t she ?  
 Person2:Do you think so ? I don ’ t like girls who look like that . I like girls who aren ’ t too slim . If you like her , go and talk to her .  
 Person1:        I ’ d like to , but there ’ s her boyfriend . He ’ s very broad-shouldered .  
 Person2:He ’ s huge ! He must go to the gym to have a well-built body like that .  
 Person1:        Do you prefer tall girls or short ones ?  
 Person2:I don ’ t mind , but I like girls with long hair .  
 Person1:        We have different tastes . I like girls with short hair . I like tall girls - probably because I ’ m so tall myself .  
 Person2:Have you ever dated a girl taller than you ?  
 Person1:        No , never . I don ’ t think I ’ Ve ever met a girl taller than me ! Have you gained weight recently ?  
 Person2:Yes , I have . Perhaps I should go to the gym , like that girl ’ s boyfriend .  
 Person1:        I'm getting a bit plump myself . Perhaps I ’ ll go with you . 

Ex Output:
formal


Ex Input:
 Person1:       What day is today ?  
 Person2:Today is December twenty-third , two thousand and two .  
 Person1:        Oh , The day after tomorrow is Christmas .  
 Person2:Merry Christmas to you . 

Ex Output:

informal


