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: I think we have had a very pleasant conversation , haven't we ?
Person2:Yes , I think so too .
Person1: Do you have any other questions ?
Person2:Let me think ... I want to know if the company can provide free accommodation for a new employee .
Person1: I'm sorry we can't now .
Person2:I really hope that your company could provide living places ; otherwise I have to rent a house to live .
Person1: Maybe the company will build dormitory for the employees in the future .
Person2:That would work too .
Person1: Anything else ?
Person2:Some companies will pay part of the phone bills for the employees . Will this company do so ?
Person1: I'm sorry we won't do so for a new employee . We only provide this benefit to employees who have made significant contributions to the company .
Person2:I understand . Will the company provide training ?
Person1: Yes , we will , and the staff will have a chance to travel every year .
Person2:That's great . Thank you very much .
Example Output: informal

Example 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 .
Example Output: formal

Example Input: Person1: Would you like anything else , sir ?
Person2:May I have some water , please ?
Person1: Certainly . Would you like your coffee with your dinner or later ?
Person2:With my dinner , please . And can you take my order for dessert later ?
Person1: Of course .
Example Output:
informal