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'.

Person1: I am checking out . Here is the key to my room .
Person2:Thank you . I'll just print out your receipt , and then you're free to go . Here you go !
Person1: Thanks .
Person2:If you don't mind me asking , how did you enjoy your stay at New York Hotel ?
Person1: This hotel could use some insecticide , but my time in New York was thoroughly delightful .
Person2:That's very honest of you . Rest assured that this hotel will have no insects next time .
formal

Person1: I usually bowl with an eight ball . I like the control of a light ball . I can spin it more , so that the ball hooks .
Person2:Well . I like them a little heavier . I don't have as much control , usually bowling straight , but the extra momentum compensates for that .
Person1: Well , let's see which technique is better . I think I'll go up first ... Yes ! I hit a strike . I knocked them all down on my first bowl .
Person2:Well done . You got them all . You get 10 points and your next two bowls are added to this frame's score . I'II dry my ball off and try to knock them all down as well .
Person1: Good start . You knocked eight pins down . But you are left with a 7,10 split . Unless you can bowl a UFO-ball on this bowl , it is going to be impossible .
Person2:I certainly can try ... No ! It went straight through the wickets .
informal

Person1: Good morning , Textile Import & Export Company .
Person2:Hello , this is Miller . I'm calling about the appointment with Mr . Zhang for this afternoon . Something's just come up , I'm afraid the appointment will have to be rescheduled , I'm very sorry about the change .
Person1: That's all right . Maybe we can make another arrangement .
Person2:You're very kind to say so . Thank you . Do you think tomorrow morning would suit him ?
Person1: I'm afraid there's a bit of a problem . In fact , he's booked up the whole week except tomorrow afternoon .
Person2:Tomorrow afternoon , Um ... you see , I've made an appointment with Mr . Comet for tomorrow afternoon . In order to meet Mr . Zhang , I have to cancel the appointment with Mr . Comet , I'm afraid .
Person1: I'm terribly sorry , Mr Miller , but Mr . Zhang is really busy this week .
Person2:I understand . When do you think I can come and see him tomorrow afternoon ?
Person1: Please let me check . Tomorrow afternoon - Yes , he'll be free from 2:00 tomorrow afternoon . Do you think it's convenient for you ?
Person2:Yes , that's quite all right for me .
formal