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:       Joanne , let ’ s not make this divorce any more acrimonious than it already is , okay ? Let ’ s just get down to business and start dividing this stuff up fairly , so we can go our separate ways , alright ?  
 Person2:Fine with me . I just want to get this over with . It ’ s important we make a clean break . I should have signed a pre-nup .  
 Person1:        What was that ?  
 Person2:Nothing ! Anyway , you ’ re right , there ’ s no reason this has to be nasty.My lawyer tells me you ’ Ve accepted our alimony proposal and the division of property , as well as the custody agreement - I keep the cat and you get the dog . So that ’ s done ... finally .  
 Person1:        Let ’ s not go there , Joanne ! Ok , so let ’ s start with the record collection , I ’ ll take the albums I contributed and you can have your cheesy disco albums back .  
 Person2:Fine , but I ’ m keeping the antique gramophone as my grandfather gave it to me .  
 Person1:        I believe that was a wedding present to both of us , Joanne . And you hardly ever use it !  
 Person2:He ’ s my grandfather , and he never really liked you anyway !  
 Person1:        Whatever ! Alright , I ’ ll concede the silly gramophone , if you ’ ll agree that I get the silver tea set .  
 Person2:How typical , when are you ever going to use a silver tea set ? Fine ! I don ’ t want to drag this out any longer than necessary . What ’ s next ? What about these old photographs ?  
 Person1:        Which ones ? Let me have a look.Wow , look at that ! That brings back memories ... That ?  
 Person2:Our trip to Italy ! I remember that day . We were going to visit the Trev fountain , and we got caught in the rain ...  
 Person1:        ... and you looked so adorable with your hair all wet . I had to take a picture of you standing there in that little alley , smiling and laughing in the rain ...  
 Person2:Oh , we really did have fun back then , didn ’ t we ?  
 Person1:        Oh , Joanne , are we making a big mistake ? I know our relationship has been on the rocks for sometime but are you sure we can ’ t reconcile and try again ? I still love you .  
 Person2:Oh Jeff ! I love you too ! I ’ m so glad we didn ’ t have to decide who keeps the motorcycle .  
 Person1:        The motorcycle ? But that ’ s mine ! 

informal