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'.
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Question: Person1: I'm quite upset ! I want a new room and a refund for tonight .
Person2:Forgive me , sir , I haven't been told what the problem is .
Person1: I'm about to be swept away by millions of cockroaches !
Person2:My apologies , sir . We'll transfer you to a new room at once and give you a full refund .
Person1: Thank you . I didn't want to have to take this to court .
Person2:Sir , we never want a guest to stay here mad or unhappy .

Answer: informal

Question: Person1: Hi , dear , do you know what the important day is today ?
Person2:I don ' t know .
Person1: Please think it over .
Person2:Oh , I see .
Person1: Come on , dear . I know you mustn ' t forget it .
Person2:It ' s Saturday , a great weekend .
Person1: Ur , you really let me down .
Person2:Don ' t be angry with me . I have a bad memory .
Person1: No , you haven ' t . You just don ' t care about me . You ' re an indifferent husband .
Person2:What day is it on earth ?
Person1: It ' s an anniversary of our weeding .

Answer: informal

Question: Person1: Good evening , John .
Person2:Good evening , Mary .
Person1: How are you doing ?
Person2:I'm doing fine , thanks.What ' s new with you ?
Person1: Nothing special .
Person2:I'm wondering whether you could come over for a pizza sometime next week ?
Person1: Sounds good.Sorry , here comes my bus.You call me , or I'll call you to make a date .
Person2:I'll call you .
Person1: All right.Gotta go , bye , keep in touch .
Person2:Have a great day , take care , bye .

Answer:
informal