Definition: 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'.
Input:  Person1:       Guess what ? I've got great news !  
 Person2:What is it ?  
 Person1:        Well , you know how I've been working at the Economist as a proof-reader , right ?  
 Person2:Yes .  
 Person1:        Well , the editor-in-chief heard that I had experience as an editor at another magadize and asked me if I was interested in becoming an assistant editor for him .  
 Person2:Really ? That's fantastic ! Will you get a chance to do any writing ?  
 Person1:        She said that the columnist for the literary criticism column would be going on pregnancy leave soon and that I could be in charge of the column until she came back .  
 Person2:Wow ! That's really great news . How often does the magazine come out ?  
 Person1:        It's a monthly magazine , but my column will be shared with another columnist so my articles will be due fortnightly .  
 Person2:Are you looking forward to doing more editing work ?  
 Person1:        Yes , but I'm even more excited about getting my thoughts published again !  
 Person2:Do you have any order forms here so that I can get a subscription to the magazine ?  
 Person1:        I don't have any with me , but I think I could manage to bring a free copy home for you .  
 Person2:I'm really looking forward to reading your column .  
 Person1:        Me , too . Do you want to go out to celebrate my good news ?  
 Person2:Sure , where would you like to go ?  
 Person1:        Perhaps we could go to the library festival that's going on at the local bookshop . 

informal