Definition: 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:  Person1:       How did you choose courses when you were abroad ?  
 Person2:That's a very good question . Choosing proper courses and effectively planning a college schedule is very important to the progress toward your educational goal . In order to do these wisely and effectively , you should consult with a Program Adviser or Academic Counselor .  
 Person1:        Wait a minute . There are some new terms for me . I can hardly follow you .  
 Person2:Ok , I will go into more detail . A Program Adviser or an Academic Counselor is usually an experienced professor who is responsible for all the necessary academic counseling through graduation . You can discuss with him the program selection , changing or adding a program , the requirements for graduation , and other problems related to your study . You will choose some courses , and then discuss with the adviser whether your choice can meet the requirements for graduation .  
 Person1:        Everything is so new to me . I think I'll have to experience a very difficult period when I get there .  
 Person2:Sure , very difficult .  
 Person1:        I am very grateful for your advice .  
 Person2:It's my pleasure to talk with you . 

informal