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:       May I ask what the name is the girl ? 
 Person2:Which one ? 
 Person1:        The tallest one . 
 Person2:She is Miao Li . She's come here to see her brother . 
 Person1:        Oh , it's so . She looks very lovely . Could you give me some else information on her ? 
 Person2:OK . She's a costume designer and works in a garment mill . 
 Person1:        How do you think about her ? 
 Person2:She looks very beautiful . She is a nice girl . 
 Person1:        I'm wondering if she has boyfriend . 
 Person2:No , she hasn't . 
 Person1:        Great ! Thank you very much . 

informal