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:       did you go to university ?  
 Person2:yes , I graduated with a BA in English from Qingdao University .  
 Person1:        when did you graduate ?  
 Person2:just a few years ago . What about you ?  
 Person1:        I just graduated from high school .  
 Person2:are you planning on going to university ?  
 Person1:        I'd like to get a BA , but I don't know where I should go .  
 Person2:have you applied anywhere yet ?  
 Person1:        yes , I've applied to four universities and have been accepted into all of them .  
 Person2:congratulations ! Which one is the cheapest ?  
 Person1:        the tuition is the same for all of them .  
 Person2:which one has the most interesting course ?  
 Person1:        I think the course at Leeds University is interesting , but I think the one at Manchester University would be more practical .  
 Person2:where would you like to be located ?  
 Person1:        I'd really like to be in London , but it's the most expensive city in England to live in , so I don't know if I can afford to live there .  
 Person2:have you applied for grants or financial aid of some sort ?  
 Person1:        not yet .  
 Person2:I think you should do that soon . It will help you make a decision about the school you go to .  
 Person1:        that's a good idea .  
 Person2:good luck ! 

informal