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: Can I talk to you for a moment , manager ?
Person2:Yes , of course . What is it ?
Person1: I've decided to leave .
Person2:Leave ? Why ?
Person1: I've worked here for two years . And I want to do something different .
Person2:What do you mean by something different ?
Person1: I want to live abroad and learn to speak a different language .
Person2:I'm really sorry . But I understand .
Person1: Thank you , manager .

Answer: formal

Question: Person1: Excuse me , is this seat taken ?
Person2:Er ... no , go ahead .
Person1: You work upstair , right ? I think I have seen you before . I'm Karren , Karren Brown .
Person2:Nice to meet you , Karren . I'm Tim Wang .
Person1: Happy to know you , Tim .

Answer: informal

Question: Person1: It's snowing outside .
Person2:Oh , how could it be ?
Person1: Let's go out and have a look .
Person2:OK . Wait a minute .
Person1: Look at the snow , it's so beautiful .
Person2:Yes . It's really snowing .
Person1: I love winter , I love snow .
Person2:But don't you think it's a little too cold ?
Person1: But I like cold more than hot .
Person2:You are so interesting .

Answer:
informal