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:       Oh , what a beautiful garden ! 
 Person2:These are my roses . The roses have been in flower for a week . 
 Person1:        The garden looks lovely when the roses are in bloom . You must have a lot of pleasure in planting flowers . 
 Person2:Yes , you are right . I love flowers and hence have taken to growing them . I take care of my flowers every day as if they are my good friends . 
 Person1:        You did a good job . But I got tired of working in the garden . 
 Person2:Oh , I see . People who don't understand the nature of flowers won't be able to grow them well . I can help you learn more if you want to plant flowers one day . In this way you need not be afraid of your own sweet flower-garden's being neglected . 
 Person1:        Yes . Thanks . 

informal