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:       Dad , I ’ d like to borrow some money .  
 Person2:Sure , Johnny , how much do you need ? five bucks ?  
 Person1:        Come on , Dad , I need thirty thousand . I wanna get into the market . You know , I ’ m tired of hearing all this news about the economic downturn , the inevitable recession , people stuffing their money in their mattresses . I look at this as an opportunity . This is a chance for me to get a jump start on building my nest egg .  
 Person2:I don ’ t know about that ; with all the uncertainty in the markets right now , it would be a very unwise decision to invest . I don ’ t know if you ’ re aware son , but there has been a lot of turmoil in the markets recently . There have already been half a million layoffs in the last few months , and we have no idea how the proposed stimulus package will impact the economy . There ’ s just too much instability . I wouldn ’ t feel comfortable investing in this climate .  
 Person1:        But look at it this way , every challenge is an opportunity . And anyway , I ’ m not talking about investing in the domestic market . There are emerging markets that promise great returns . Look at China , for example , they have 1.4 billion people , half a billion of whom have recently entered the middle class . Here alone the aggregate demand for consumer goods represents an amazing wealth generating opportunity .  
 Person2:Come on , son , you ’ re looking at this too naively , the Chinese market has exhibited a great deal of instability , and their currency has been devalued by almost a whole percentage point .  
 Person1:        Fine , then ! If that ’ s the way you feel , so be it . But you ’ re losing out on a great opportunity here . I ’ m going to go hit up Mum for the cash . 

informal