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: Congratulations , Vivian . You won the grand prize , again .
Person2:Isn't it just great ! I just knew I'd win !
Person1: You did ? How ? Did you wear red underwear again this year ?
Person2:Not only that !
Person1: Tell me ! Tell me ! What's your secret ? !
Person2:OK , OK . I'll whisper it to you , but you have to promise not to tell anyone !
Person1: What ? ! You did that ? ? ! ! !
Example Output: informal

Example Input: Person1: Do you like traveling ?
Person2:Yes . I ' Ve just come back from Scotland .
Person1: Where did you visit ?
Person2:I only had time to visit Edinburgh .
Person1: How did you like it ?
Person2:It ' s fantastic .
Person1: Where did you go there .
Person2:I went to there on business .
Person1: And do you have friend there ?
Person2:Yes , a lot of friends .
Person1: You must enjoy yourself .
Person2:Yes . And I took many pictures .
Example Output: formal

Example Input: Person1: Where do you see yourself three years from now ?
Person2:Working for your company ! As the top administrative assistant in your firm !
Person1: Good answer , Miss Zhang-good answer ! Seriously , though , are you interested in staying in a staff-level position , or would you hope to move into management someday ?
Person2:Well , I haven't thought much about this . I think it's too early to tell . What is the most important for me now is to do the best possible job for the company and learn and develop my skills as much as possible . If the company is happy with my work , then , I think I would like to consider other positions in the company .
Person1: Fine . What kind of relationship do you think should exist between a boss and his or her employees ?
Person2:Well , a working relationship . I think a company is a place to get work done . Certainly friendly , open relationships among all company employees is important . But I think an employee should be serious about his or her work responsibilities and have a working relationship with the boss .
Example Output:
formal