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: Excuse me , I want to know the price of your CPU .
Person2:Glad to tell you . The price of CPU is 300 dollars .
Person1: It's rather too high . If you can make it cheaper , we will be able to place large orders continuously .
Person2:If you order a large amount , we can give you a discount .
Person1: Well , can you explain it to me ?
Person2:The price of CPU is 260 dollars above 1,000 Units .
Person1: Can you reduce more ?
Person2:I'm sorry , but to be frank , considering exploiting the market in your country , we have already supplied you at very low preferential price .
Person1: In that case , we have to stop ordering if a reduction can't be made . Please reconsider .
Person2:It is so hard to deal with .
Person1: If you can give us a more reduction , We'd be able to give you an order on the spot .
Person2:This price is the best we can make .
A:
formal