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: Consider Input: Person1: Have you heard about Anlesen David ?
Person2:No , have they have another fight ?
Person1: No , they got engaged .
Person2:You must be joking.Those two .
Person1: Well , my dear . I didn't believe either.But got it straight form the horse's mouth.Davi called me this morning .
Person2:So when did this happen ?
Person1: Last weekend , while they were on the Sik trip .
Person2:Well , I believe it now , and when are they are getting marry ?
Person1: Next june .
Person2:I can hardly believe it .

Output: informal

Input: Consider Input: Person1: I can ' t believe the cost of apartments in New York City .
Person2:Oh , you didn ' t know that apartments here are considered valuable , even if they are small and crowded ?
Person1: Of course I had heard about that , but now I know how expensive it is to rent a place here .
Person2:I don ' t mind paying high rent to live in New York .
Person1: Why ? You pay so much for such a tiny space to live .
Person2:Yeah , but so what ! I ' m proud to live in the world ' s most exciting city . And , the salaries here are the highest in the nation , too .

Output: informal

Input: Consider Input: Person1: You ' re new here , right ?
Person2:Yes , I am .
Person1: Will this be your first year ?
Person2:No , I transferred here .
Person1: What school did you come from ?
Person2:I transferred from PCC .
Person1: Why ' d you transfer here ?
Person2:I wanted to attend this school originally , but my grades out of high school weren ' t good enough .
Person1: Is PCC a good school ?
Person2:PCC is great !
Person1: I hope you enjoy it here .
Person2:Thank you very much .
Output: informal