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:       Ah ! No ! Damn it !  
 Person2:It's a blackout . Now I can't see Seinfeld .  
 Person1:        So what ? I just lost one hour's worth of work .  
 Person2:Really ? How could you do that ? Don't you save every couple minutes ?  
 Person1:        No , I didn't save this time.Damn it ! And I'm sick of writing this paper . Now I have to write it all over again too .  
 Person2:I've had that problem too many times . So I learned to save.When I'm writing something , I save every three sentences or so . I don't want to lose anything .  
 Person1:        I hate computers . Sometimes I think they cause more trouble than they're worth .  
 Person2:What are we going to do now ?  
 Person1:        I don't know . I feel like going out .  
 Person2:I wonder how much of the city is down .  
 Person1:        It doesn't matter . I still can go out and buy a beer .  
 Person2:Maybe . But if there's a blackout , probably the pubs are closed.And besides , I know you have a political science exam tomorrow . I thought you had a lot of reading to do .  
 Person1:        Yes , that's true . Damn ! I just lost half my paper , and now I can't even do my homework.This is a bad time for this to happen .  
 Person2:I have a flashlight in my closet . If you want to use that to read , you can . 
A:
informal