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:       How beautiful the flower is ! 
 Person2:Really , it's so beautiful . 
 Person1:        You like it . Well , I'll gather in for you . 
 Person2:You mustn't pick it in this place . 
 Person1:        Where it is ? 
 Person2:It's a private garden . 

informal