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:       I heard you are busy with your new house now ?  
 Person2:Yeah , I want my own house very much , so I decide to buy one .  
 Person1:        Let meet this right — — do you want to buy the house ?  
 Person2:Yeah . This is a big house with a garden . I like it very much .  
 Person1:        But it is far from downtown . Living here is very inconvenient .  
 Person2:It is very quiet and peaceful . This is what I want . 

formal