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'.
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Question: Person1: You are in love with Mary , right ?
Person2:You are pulling my legs !
Person1: I am not blind . Anyone can see that with half an eye .

Answer: formal

Question: Person1: Wow ! Look at the time . lt's about 11 0 ' clock .
Person2:Really ? I didn't realize it was so late .
Person1: I've got to catch the last bus . See you later .

Answer: informal

Question: Person1: When she told me that she would marry no man but Dick , my heart was almost in my mouth .
Person2:You were scared , too ? I dared not tell you my feeling when I heard that . I almost got fainted .
Person1: I could not and can ' t make out the reason why she would set her heart on a man like Dick . He plays the field with many girls .
Person2:But Sarah says she does not care , so long as he loves her .

Answer:
informal