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:       What do you think this flat ?  
 Person2:It's not really all that good.The bedroom is a little small for us .  
 Person1:        Small ? But it should be enough for our needs , I think .  
 Person2:But there's no hot water after 10 at night.Sometimes I like to have a hot shower before bed , especially in the winter , it feels good .  
 Person1:        That's true , but I love the living room , it's huge and filled with sunshine .  
 Person2:True , and I like the kitchen.It ' s new and well equipped .  
 Person1:        It has a great balcony with an incredible view of the park .  
 Person2:You are right.The view is spectacular.But that bedroom is so small.We ' d never be able to fit all of our stuff in there .  
 Person1:        May be we could get some new furniture , better stuff .  
 Person2:I haven't thought of that . 

informal