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:       Are you doing something on Saturday evening ? If not , welcome to my new apartment .  
 Person2:You moved to a new place ?  
 Person1:        Yes , I have been busy emptying the packing boxes and cleaning up the mats . Right now , it looks like a home . I would like to have a small celebration party . Please do come .  
 Person2:Thank you for inviting me . Sounds lovely ! I would like to come . Where is your new apartment ?  
 Person1:        It is in the DX community , Room 306 , No . 2 building . It is very easy to find . Just ask the guard at the entrance .  
 Person2:Who else will come ?  
 Person1:        I invited all the colleagues in our department and also my former neighbor , Paul . He is a very good person . You should meet him .  
 Person2:Ok , I will be there around 6 . Is that ok for you ?  
 Person1:        Yes , great . I am happy you are coming . 

informal