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: Hi ! Someone has reported a fault on one of your copiers .
Person2:That's right . I'm glad you're here . It hasn't been working properly for the last few days .
Person1: When was it serviced ?
Person2:Just a couple of weeks ago . It's usually very reliable .
Person1: What's actually wrong with it ?
Person2:Well , it's making a strange noise when we try to change paper trays .
Person1: I'm sure it's nothing serious , probably just a minor fault . I'll have a look at it .
[A]: formal

[Q]: Person1: Good morning . Mrs.Smith .
Person2:Good morning ! Can you help me , please ? I'm looking for some books for my mother .
Person1: Well , what kind of books does she like ?
Person2:She's very fond of detective stories ?
Person1: I see . Has she read any detective stories ?
Person2:Oh , yes !
Person1: Do you know if she's read this one ?
Person2:I'm not sure , but she probably won't remember if she has ! She's very forgetful !
Person1: Ah ! She has a bad memory . How old is she ?
Person2:She's eighty-seven .
Person1: I suggest you take this book . It's very exciting .
Person2:Thank you . That's a good idea.she likes exciting books . Can you suggest another one ?
[A]: informal

[Q]: Person1: Ugh . Another advertisement . They ' Ve added two hours of advertisements to a two hours movie .
Person2:Yeah . We ' re never going to get to the end of this one .
Person1: Why are we watching it anyway ?
Person2:Well , it does have a lot of girls in it .
Person1: True . True .
Person2:Do you think Bruce Willis just drank a Coke for his health ?
Person1: Really ? Did Coke pay him for that ?
Person2:Of course .
Person1: You want something to drink ?
Person2:Yeah , Got a Coke ?
Person1: Sure .
Person2:Hurry , the movie is coming back on .
[A]:
informal