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: Hey man , you wanna buy some weed ?
Person2:Some what ?
Person 1:Weed ! You know ? Pot , Ganja , Mary Jane some chronic !
Person2: Oh , umm , no thanks .
Person1: I also have blow if you prefer to do a few lines .
Person2: No , I am ok , really .
Person1: Come on man ! I even got dope and acid ! Try some !
Person2: Do you really have all of these drugs ? Where do you get them from ?
Person1: I got my connections ! Just tell me what you want and I ' ll even give you one ounce for free .
Person2: Sounds good ! Let ' s see , I want .
Person1: Yeah ?
Person2:I want you to put your hands behind your head ! You are under arrest !
Example output: informal
Example explanation: Based on the conversation, we can see that there is a presence of exclamation which is not present in a formal discussion. Therefore this is an informal conversation
Q: Person1: I really like what you have . But the price for this product is much higher than we expected . I am absolutely not a buyer at that price .
Person2:I know it is not the cheapest on the market . But if you take the quality factor into consideration , you will find your company will benefit in the long term . This device is built in with the most advanced technology . Every aspect has reached the international standard . It is a worthwhile investment .
Person1: I understand that . If you can lower the price by 10 percent , we have a deal right now .
Person2:Well , the best I can do is to lower the price by 5 percent if you are willing to pay 90 % cash of front and 10 % on delivery . That is our best offer .
Person1: Err , well , I can ' t decide right now . Do you mind if I have a small internal discussion on this first ? I will tell you our decision this afternoon .
Person2:Sure , no problem .
A:
informal