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:       Is your lady beautiful ? Since I came here from the country , I've not seen her close . Tell me , is she beautiful ? 
 Person2:Thomas , if I could write with the beauty in her eyes , I was born to look in them and know myself . 
 Person1:        And , her lips ? 
 Person2:Her lips ? The early morning rose would wither on the branch if it could feel envy . 
 Person1:        And her voice like a lark's song ? 
 Person2:Deeper , softer , none of your twittering larks . I would banish nightingales from her garden before they interrupted her song . 
 Person1:        Oh , she sings too ? 
 Person2:Constantly . Without doubt , and plays the lute . She has a natural ear . 

informal