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: Hello , this is my claim tag . Can I get my baggage ?
Person2:Let me see . En . Here is your baggage .
Person1: Thank you . And where can I get a pushcart ?
Person2:Walk ahead a little further . There are plenty of them .

Answer: formal

Question: Person1: I like this shirt.How much is it ?
Person2:$ 135 .
Person1: Wow , that's sheer robbery.Shall I make an offer ?
Person2:I'm sorry , sir.The price is fixed .

Answer: informal

Question: Person1: Did you hear Peter just retired ?
Person2:Are you sure ? He is quite young , isn't he ?
Person1: He is not young as he looks . I think he's almost sixty .
Person2:Really ? He looks so young .

Answer:
informal