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:       Good morning , sir . Can I help you ? 
 Person2:Good morning . I have a reservation for a single room with a bath here . 
 Person1:        May I have your name , please ? 
 Person2:John Bradley . 
 Person1:        Just a moment , sir , while I look through our list . Yes , we do have a reservation for you , Mr . Bradley . Would you please fill out this form while I prepare your key card for you ? 
 Person2:Yes , can I borrow your pen for a minute please ? 
 Person1:        Sure . Here you are . 
 Person2:What should I fill in under the room number ? 
 Person1:        You can just skip that . I will put in the room number for you later on . 
 Person2:Here you are . I think I have filled out everything correctly . 
 Person1:        Let me see , name , address , nationality , forwarding address , passport number , place of issue , signature and date of departure . Oh , here sir . You forgot to put that date of your departure . Here let me fill it in for you . Are you leaving in ... ? 
 Person2:Oct 24th . 
 Person1:        Now everything is in order . Mr . Bradley , your room number is 6020 . It is on the sixth floor and the daily rate is 90 dollars per night . Here is your key card with all the information on your booking , the hotel services and the hotel rules and regulations on it . Please make sure that you have it with you all the time . You need to show it when you sign in for your meals and drinks in the restaurants and the bars . You also need to show it when you collect your key from the information desk . 
 Person2:Ok , I will take good care of it . 
 Person1:        And now if you are ready Mr.Bradley , I will call the bellboy and he will take you to your room . 
 Person2:Yes , I am ready . Thank you . 
 Person1:        I hope you enjoy your stay with us . 
 Person2:I will try . 

formal