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:       What case do you have against the police ?  
 Person2:I want to take them to court for arresting me .  
 Person1:        I don ’ t understand .  
 Person2:There was no reason for them to arrest me .  
 Person1:        They let you go , didn ’ t they ?  
 Person2:They released me the next morning .  
 Person1:        They detained you at the station ?  
 Person2:That ’ s exactly what they did .  
 Person1:        Why did they arrest you ?  
 Person2:They said I matched the description of a robber .  
 Person1:        I get it now .  
 Person2:I ’ m definitely taking them to court . 

informal