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: Are you sure that this bus will take us to Santa Anita mall ?
Person2:Yes , it will .
Person1: You know that for a fact ?
Person2:Yeah , I take this bus all the time .
Person1: Is it a very long bus ride ?
Person2:It's about thirty minutes long .
Person1: Do you know where we get off at ?
Person2:There's a bus stop right behind Macy's .
Person1: Really , there's a bus stop right by the mall ?
Person2:There's a bus stop in the mall parking lot .
Person1: That's convenient .
Person2:Absolutely .
[A]: informal

[Q]: Person1: She is , like , mega-intense , isn't she ?
Person2:Ha , she is unstoppable . I'm learning so much from her .
Person1: What's it like to work with her ?
Person2:She's demanding . But I like that . I mean , I know our timeline is tight .
Person1: Tell me about it .
Person2:You guys are working around the clock , I know . That guy Dave next to Zina never leaves .
Person1: Vince wants us to have everything debugged and ready to go by the end of the month .
[A]: formal

[Q]: 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 .
[A]:
informal