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:       I have a parking ticket to pay for .  
 Person2:Did you bring your ticket ?  
 Person1:        Yes , I remembered to bring my ticket with me today .  
 Person2:Did you bring your ID ?  
 Person1:        I didn't bring my ID .  
 Person2:You're going to need your ID to pay the ticket .  
 Person1:        What do you need my ID for ?  
 Person2:We have to know that this ticket is really yours .  
 Person1:        All right , I see what you mean .  
 Person2:Next time you come back , bring your ID .  
 Person1:        Will everything be cleared from my record ?  
 Person2:Yes , everything will be cleared . 

formal