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:       Hi .  
 Person2:Hi , Mary , Hi , Ken I hate to bring this up , but that new stereo , system you got ...  
 Person1:        Yeah ?  
 Person2:You were playing it very late last night .  
 Person1:        Yeah ?  
 Person2:It kept me awake .  
 Person1:        Oh , I'm sorry .  
 Person2:It kept me awake a couple of hours .  
 Person1:        I'm so sorry , I .. I didn't realize it was that loud .  
 Person2:It was that loud , and it was pretty late , and check with Mary if you don't believe me .  
 Person1:        It's true.It was a bit loud .  
 Person2:I'm very sorry . I didn't realize it . I promise I'll keep it down in the future .  
 Person1:        Oh , it's no problem.It ' s OK.You know , it only happened once .  
 Person2:I am glad we've straightened everything out . 

Ex Output:
informal


Ex Input:
 Person1:       Do you remember Tina , my good friend ?  
 Person2:Yes .  
 Person1:        She just broke up with her boyfriend .  
 Person2:Well , that happens . I hope she is all right .  
 Person1:        But the problem is she and her ex-boyfriend are working in the same department . It is somehow embarrassing for them to see each other everyday .  
 Person2:That is the down side of an office romance . I hope their work is not affected by the emotional stress . The boss must be very annoyed if that will be the case .  
 Person1:        Well , Tina says she would be able to handle it and concentrate on her own work , easier set them done . But working harder and concentrating only on the job might well helped to overcome the initial stress of the breakup . 

Ex Output:
formal


Ex Input:
 Person1:       Would you like to go skiing with me ? I heard the new ski area is great . They have safe tracks , especially for the beginners and provide free training . I think it suits you best .  
 Person2:Sounds not bad ! You know , the only thing I worried about is the safety . I ’ m not an active exerciser and my muscle may be not strong enough for such an intense sport .  
 Person1:        Then you can go to the three-day-long training camp first . There ’ re some professional teachers and they can guide you to do certain necessary exercise .  
 Person2:I will think about it .  
 Person1:        Come on ! It is really a fun game . 

Ex Output:

informal


