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:       My mother bought me a new video game .  
 Person2:What's it like ?  
 Person1:        Well , the hero is a Super Warrior . He has to fight the bad guys to find the treasure .  
 Person2:Who are the bad guys ?  
 Person1:        There are a lot ! Two really bad ones are Giant Monster and Human Spider .  
 Person2:Wow ! Where's the treasure ?  
 Person1:        It's in a dungeon , under a castle .  
 Person2:How do you find it ?  
 Person1:        It's not easy to find . Anyway , you can come to my home after school today and try .  
 Person2:Great ! 

informal