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'.

[EX Q]: Person1: It's said you will go abroad to pursue your graduate studies .
Person2:Yes , I've been thinking about visiting you . I hope to get some advice from you .
Person1: Which country do you want to go to ?
Person2:My field is electronic engineering . Which country do you think I should go ?
Person1: Were I in your position , I'd go to America .
Person2:Which university should I apply to ?
Person1: There are many universities for you to choose from . Some famous universities such as Harvard , Yale , the University of Michigan , and Massachusetts Institute of Technology are really wonderful places to study , but they are very competitive and expensive . Some smaller universities or institutes are also very nice but much cheaper .
Person2:Oh , I see . Thank you very much .
[EX A]: formal

[EX Q]: Person1: Do you know that John isn't going to come back to our school ?
Person2:Really ? Why ?
Person1: He had moved and held a party on July 1st .
Person2:It's a pity that I was traveling around Europe at that time .
Person1: Even he's not coming back to school anymore , you still can call him and meet him on weekends .
Person2:You're right ! I will call him this weekend and meet him .
[EX A]: informal

[EX Q]: Person1: Could I have my hair dyed ?
Person2:Certainly , which color do you want to dye it ?
Person1: I want the latest fashion , can you make some suggestions ?
Person2:Right now , many girls are dyeing there hair blond .
Person1: I don't think that was suit me very well , blond is kind of erratic .
Person2:What do you think about pink ?
Person1: Oh , no . I think it's better to be a natural chinese , with natural chinese hair.Have you got good brand of hair dye ?
Person2:Yes , we have several brands , which one do you prefer ?
Person1: I want the best one .
Person2:First , you need a shampoo , it makes it easier for your hair to be dyed . Let's down your hair in the water , you hair will be fairly clean that way .
Person1: After this dye job , it feels I look younger .
Person2:You hair is definitely fresh and shiner looking .
[EX A]:
formal