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'.

Ex Input:
Person1: Where can I buy textbooks ?
Person2:First , you need to have the list of books for your class . Do you have that ?
Person1: Yes , I have that .
Person2:Well , when you have that , you can take it over to the bookstore . Can you find it ?
Person1: No , I don't know where the bookstore is .
Person2:Just pass the gym and it's the first door on your left . Were you aware that you can also turn in your old textbooks for money ?
Person1: Really ? How can I do that ?
Person2:Take your used textbooks with you and give them to the representative near the entrance . He will pay you for them . Are you going today ?
Person1: No , I can't make it today .
Person2:I could help you with buying your books if you meet me there at 1
Person1: No , thanks . I'm good .
Person2:I'll see you later then . Have a great day !

Ex Output:
informal

Ex Input:
Person1: I ' m thinking about redecorating my bedroom . I bought this magazine in order to get some ideas . What do you think of this ?
Person2:That looks good . The room in the picture is bigger than your bedroom , so you wouldn ' t be able to have all that furniture in your room .
Person1: I ' d like to have the bed and the wardrobe .
Person2:You would fit both of them in your bedroom . Perhaps you could also get the dressing table . I think that one would look good in your bedroom .
Person1: Yes , it would . It ' s very expensive though .
Person2:Everything in this magazine seems expensive . You could probably find something similar in a discount store .
Person1: Yes . I ' m sure I could find something similar at one . I ' d also like to get a new carpet for my bedroom .
Person2:You can get cheap carpets easily . Another idea is to buy a rug . That would cover a lot of the carpet and you wouldn ' t have to replace the carpet . It would save you a lot of work .
Person1: That ' s a good idea . I ' m really looking forward to redoing my bedroom .

Ex Output:
informal

Ex Input:
Person1: Office software like Windows might be one of the best inventions in this information age . It saves us from so much work and makes the communication even around the world much easier .
Person2:Fully agree . I do enjoy the convenience though I am still a beginner in using Excel . The latest office equipment is more type-functional . It combines fax machine , copy machine and printer in one . It saves a lot of place one machine instead of three .
Person1: Yes , this machine is even smaller than those before .
Person2:When will we get one of those ?
Person1: You know our boss always trying to save the last penny . We have to use up the equipment first .

Ex Output:
formal