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'.

Example Input: Person1: Have you had a chance to look over the contract ?
Person2:Yes . I've read it carefully .
Person1: And do you have any questions ?
Person2:No . But the contract stipulates that I will teach 22 hours a week.Will you have thatmany classes for me right away ?
Person1: No , probably not . For the first two weeks you may teach 10 or 15 hours .
Person2:But my salary will be 1100 dollars a month.Will you pay me that much for the first month ? Because , I mean , I won't be working so many hours .
Person1: I understand . That's why I didn't write the date on the contract.For the first two weeks , we will pay you according to the hours you teach.When you have 22 hours of classes , then the contract will take effect.Is that alright with you ?
Person2:Oh , so I don't sign the contract today . Is that right ?
Person1: I don't want you to misunderstand , Miss Briggs.We are very serious about hiring you . We want you to teach for us.We usually do contracts this way because it is more convenient .
Person2:I can accept that .
Person1: Good . And your benefits will begin immediately .
Person2:Even my health insurance ?
Person1: Yes . We will apply for your health insurance tomorrow.And your free membership in the club starts today if you like .
Person2:I have a few questions about the free membership .
Person1: What would you like to know ?
Person2:Is my membership the same as paying club members ? I mean , can I get discounts at club hotels ?
Person1: Absolutely . The only difference is in the restaurant and bar vouchers .
Person2:What are bar vouchers ?
Person1: Paying club members get around 300 dollars a year in restaurant vouchers.The vouchers can be used in the restaurant or the lounge.But we don't offer vouchers to employees .
Person2:But according to the contract , employees get a discount in the restaurant .
Person1: That's right . So in a way , it is cheaper for you than for the members.You get more benefits than they do .
Person2:So , for now , you want me to keep a copy of the contract.But we won't sign it yet . That right ?
Person1: Yes . I've prepared the contract just so that you understand everything.So that you understand the terms .
Person2:I understand.And according to the terms on the contract , I am happy to accept this job . I look forward to it .
Person1: I'm very pleased . We look forward to having you here , Miss Briggs .
Example Output: informal

Example Input: Person1: Hi , Fanny .
Person2:Hi , Andy .
Person1: Are you feeling OK ? You sound a little tired this morning .
Person2:I did not sleep much last night . I really feel bad . It was a crazy night .
Person1: What happened ?
Person2:I had a bad dream . I was walking alone in the graveyard , and suddenly all the ghosts jumped out of their graves . They began to chase me through the graveyard and shouted that they wanted my blood .
Person1: Oh , what a nightmare ! Then what happened ?
Person2:My mother woke me up . She had heard me crying out for help .
Person1: You have got a great mother .
Person2:I felt embarrased . After all , I am 18 years old . Mom gave me some chocolate cookies and a glass of milk .
Person1: That sounds good !
Person2:Yeah , but i was afraid to fall back asleep . I am worrying about getting into the University of Michigan .
Person1: Me too . But I tell myself that if they don ' t accept me , another school will .
Example Output: formal

Example Input: Person1: Happy Birthday , Mary !
Person2:Thank you .
Person1: Here is a gift for you . I hope you like it .
Person2:What a lovely dog ! How did you know I love things like this ?
Person1: I had my own ways of finding out.It ' s a secret . You look so beautiful today . Your new shirt goes well with your skirt .
Person2:Maybe you won't believe this , but it was made by my grandmother .
Person1: Really ? It looks so nice .
Person2:Thank you , Please have a cup of tea .
Person1: All right .
Person2:How about some fish ?
Person1: No , thanks . I've had enough.Now , Mary , before you blow out the birthday candles , you have to make a wish.After that , you may cut the cake .
Person2:OK.Let me make a wish ... Do you want a big piece of cake ?
Person1: No , just a small one.Next Let's sing " Happy Birthday " to Mary .
Person2:It is so very kind of you . I'm so moved by you .
Example Output:
informal