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: Just make yourself at home .
Person2:Thank you . You are cooking up a storm .
Person1: Wouldn't you like some more chicken ?
Person2:No , thank you . I'm afraid I can't take in anymore .

Answer: informal

Question: Person1: Excuse me , Sir , do you know what time it is ?
Person2:Oh , it ' s almost eleven twenty .
Person1: Thank you .
Person2:You ' re welcome . The rain is quite heavy , isn ' t it ?
Person1: Yeah . I was in a hurry and I forgot my umbrella today .
Person2:I have one . We could share it . Which way are you going ?
Person1: Oh , that ' s very kind of you . I am going to the Garden Hotel .
Person2:I am going there , too . We can walk together .
Person1: Sure .

Answer: formal

Question: Person1: So , did I tell you about my New Year ' s resolution ? I ' Ve decided to go on a diet .
Person2:And you ' re going to completely transform your eating habits , right ?
Person1: Exactly ! I ' m going to cut out all that junk I eat , no more chips , no more soda , no more fried food .
Person2:I ' Ve heard this one before .
Person1: But this time I ' m going to stick to it . I really mean it ! Trust me , Carol , I ' m going to be a new man in one year ' s time !
Person2:Well , I guess we ' ll just have to wait and see .
Person1: Thanks , honey , that was a great meal . I ' m stuffed . Do we have any chips left ?

Answer:
formal