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: Can we go to the beach on foot ?
Person2:Oh , it's too far to walk there.We can take a bus .
Person1: Is the bus station close by ?
Person2:Yeah , it's a block away down the street .

Output: formal

Input: Consider Input: Person1: How about your grades of study ?
Person2:I have been doing quite well . As reach 90 % and Bs reach 100 % . And I ' Ve been awarded Zu Jingle Scholarship two times .
Person1: Besides your major , do you know some in other fields ?
Person2:Yes . To develop my knowledge , I studied Economics , Business Administration and Accounting through self-study . Nowadays , I have passed three courses on CPA .
Person1: Have you ever been a student leader ?
Person2:Yes , I used to be the monitor of my class .
Person1: Did it affect you much ?
Person2:It ' s a very important experience for me . First , it improved my organizing ability , and let me understand how to resolve a problem in the overall perspective instead of my own perspective . Second , it let me know how to cooperate in harmony with people who I like or dislike .

Output: formal

Input: Consider Input: Person1: Don't you ever cheat on me .
Person2:Why would I do that ?
Person1: Because men like to cheat .
Person2:Some men do , but not me .
Person1: I'm watching you .
Person2:I'm an open book . Watch me all you want .
Person1: If I catch you , you'll be sorry .
Person2:You won't catch me , because I love you . I'm not a cheater .
Person1: I will poke your eyes out .
Person2:I don't want any other woman .
Person1: I will chop your toes off , one by one .
Person2:Honey , please . You're the only woman for me , forever . I swear it .
Output: formal