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'.

Example Input: Person1: You ready ?
Person2:Am I ready for what ?
Person1: Are you ready to transfer to a new school tomorrow ?
Person2:Oh . Yes , I ' m ready to transfer .
Person1: You ' re not nervous , are you ?
Person2:I ' m very nervous .
Person1: Why are you nervous ?
Person2:I ' m not going to know anybody there .
Person1: That ' s not a problem .
Person2:That makes me nervous .
Person1: It ' s fun meeting new people .
Person2:I didn ' t think about it that way .
Example Output: formal

Example Input: Person1: Can I help you ?
Person2:Yes.When is the next train to New York City ?
Person1: Let me see ... the train to New York City ... here it is ... daily except Sunday at ten thirty , twelve twenty and fifteen ten .
Person2:Aren't there any trains before ten thirty ?
Person1: Sorry , not before ten thirty .
Person2:Then one to New York at ten thirty .
Person1: One way or round trip ?
Person2:One way .
Person1: A soft seat or hard one ?
Person2:How much is a soft ?
Person1: 15 dollars.And for a hard one , only 6 dollars .
Person2:Then one hard seat , please .
Person1: OK.Here is your change.The train leaves on platform 8 .
Example Output: formal

Example Input: Person1: Hurry up , get in .
Person2:I ' m in , let ' s go !
Person1: OK , make a left here . . . no wait , I meant make a right . Come on , speed up !
Person2:Geez ! What ' s the rush ?
Person1: Don ' t worry about it , just drive . Oh , no , the light is about to change . . . step on it !
Person2:Are you nuts ! I ' m not going to run a red light !
Person1: Whatever . Just turn right here . . . . The freeway will be packed at this hour . . . . let ' s take a side street.Go on ! Get out of our way ! Move , move !
Person2:What ' s your problem ! Geez . Having a fit is not going to help !
Person1: Here , I know a short cut ... just go down here , and we ' ll cut though Ashburn Heights . Let ' s go , let ' s go ! Watch out for that lady !
Person2:I ' m going as fast as I can !
Person1: Yes ! We made it . 5:58 , just before the library closes .
Person2:You ' re such a geek !
Example Output:
formal