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'.

Person1: Hello !
Person2:Is that the box-office ?
Person1: Yes .
Person2:I'd like to book two tickets for the film ' Jane Eyre ' for this evening , please .
Person1: Just a minute please . Oh , I'm sorry , all the tickets for tonight have been sold out .
Person2:What a pity ! How about tomorrow evening ?
Person1: Oh , you're lucky , there are just two tickets left . Do you want to take them ?
Person2:Wonderful , I'll take them .
Person1: OK , your name and telephone number please .
Person2:Wang Min . Telephone number is 13811658 . Can I pick the tickets this afternoon ?
Person1: Yes , of course .
Person2:Thank you very much .
informal

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

Person1: What's Beijing like ?
Person2:It ' s big and exciting but noisy .
Person1: What can I see in Beijing ?
Person2:You can see the Forbidden City .
Person1: What ' s it like ?
Person2:It ' s beautiful but crowded .
formal