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:       Here's the picture of my family . 
 Person2:Can you point out your mother for me ? 
 Person1:        OK.She ' s near-sighted , with a pair of glasses on her nose.She is the only one wearing glasses in my family . 

formal