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 ' Ve got this really neat idea , you can hire a car and drive straight there .
Person2:Are you nuts ? What would my friends think if they see me in a hired car ?
Person1: But that ' s the quickest way to make your plans work .
Person2:Oh this is hard ! Well , I ' ll see what I can do .

Answer: informal

Question: Person1: What's the matter ?
Person2:I'm feeling a little under the weather .

Answer: formal

Question: Person1: Have you always been on this site ?
Person2:No , we used to be on an industrial estate on the outskirts of York .
Person1: Why did you move ?
Person2:We needed larger premises so we moved to this greenfield site last year . It's nearer the motorway so it's better for transportation .

Answer:
formal