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: You won one million yuan in a lottery . What will you say ?
Person2:I don't know . I'm too excited to say a word .
Person1: I understand . It's too good to be true , isn't it ?
Person2:Yes , too good to be true .
[EX A]: informal

[EX Q]: Person1: Excuse me , Professor , I have a problem and need to leave class early .
Person2:Why do you have to leave early ?
Person1: I am not feeling well .
Person2:Could you make it up by attending my other section this week ?
Person1: Yes , it's all taken care of .
Person2:Are you leaving right away or can you stay for a few more minutes ?
Person1: I can stay a few more minutes .
Person2:OK , but please make sure that you get all of your make-up work completed .
Person1: Thanks , Professor . I've got it covered !
Person2:Go do what you have to do , but make sure it doesn't happen again .
[EX A]: formal

[EX Q]: Person1: Please take a seat .
Person2:Thanks .
Person1: Now what can I do for you ?
Person2:Well , I'm looking for a job .
Person1: Fine , but first I need some information about you .
Person2:What kind of information do you want ?
Person1: Well , first of all , your name.What ' s your surname ?
Person2:Wilson .
Person1: And your other names ?
Person2:Steven Michael .
Person1: Have you got your e-mail address ?
Person2:Yes , It's Henrylee@yahoo.com .
Person1: How old are you ?
Person2:Twenty-one .
Person1: Where were you Bron ?
Person2:In California .
[EX A]:
formal