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'.

Q: 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 .

A: formal
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Q: Person1: Excuse me , can you recommend some places for us to go tonight ?
Person2:Since it's your first time to Vienna , I think you should go to the concert .
Person1: Good idea . My wife has a fine ear for music . I am sure she would like it .
Person2:Have a nice evening .

A: formal
****
Q: Person1: Are you cold ?
Person2:Yes , a little .
Person1: I wonder if we can change the temperature .
Person2:I tried before . There are no buttons on the air conditioning .
Person1: There must be buttons . How do they turn it on and off ?
Person2:I think it is centrally controlled . They control it at the main desk .
Person1: Well , they have it too cold in here . I want to be warmer . I won't be able to sleep .
Person2:I'm going downstairs for more drinking water . I will ask them .
Person1: What did they say about the air conditioning ?
Person2:They said it is centrally controlled.All the rooms are the same . They can't change it .
Person1: That's stupid . How can I sleep in this ?
Person2:You can wear more clothes .

A:
formal
****