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:       You have the right to remain silent . Anything you say can and will be used against you in a court of law . You have the right to have an attorney present during questioning . If you cannot afford an attorney , one will be appointed for you.Do you understand ? 
 Person2:Yes . 
 Person1:        What's your name ? 
 Person2:My name is James . 
 Person1:        What's your nationality ? 
 Person2:American . 
 Person1:        What's your relationship with the victim ? 
 Person2:I don't know him . 
 Person1:        Why did you attack the victim ? 
 Person2:Because he beat me first when I tried to stop him from grabbing my bag and running away . 
 Person1:        How many times did you stab the victim ? 
 Person2:I stabbed his belly three times . 
 Person1:        Did you know hat your actions might cause serous injuries or death ? 
 Person2:I knew , but I couldn't myself . 
 Person1:        Was it your intention to kill the victim ? 
 Person2:No . I didn't kill him on purpose , madam . It's him who caused the incident . I need to see my attorney . 
 Person1:        OK.Give me his number and we'll contact him . 

formal