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 do you think of the play showed last night ?  
 Person2:I think there's too much violence and it did no good to my little boy .  
 Person1:        Yes , I turned it off when the fight got heated in it .  
 Person2:It's really hard to avoid such bad influence anyway . 

formal