instruction:
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'.
question:
Person1: I have never you mention this friend . Are you on very good terms with him or her ?
Person2:We have been on good terms . She is a very nice girl . But she got in Dutch with her boss . I don ' t have the heart to see her pounding the pavements .
Person1: You must be stuck on her , or you would not use your elbow grease .
Person2:Well , we hit it off with each other . Nothing more , nothing much .
answer:
formal

question:
Person1: Harry , do you like the opera ?
Person2:No , not really .
Person1: Why is that ? It is called real art .
Person2:Well , it's very expensive and they're usually singing in another language . That kind of gets on my nerves .
Person1: Yeah , that makes sense .
answer:
informal

question:
Person1: I wonder if you can help me . I'm looking for a room .
Person2:Yes . I've got a small room .
Person1: How much is it ?
Person2:200 yuan a week , but smoking is not allowed .
Person1: OK.Can I see the room now ?
Person2:Would you mind waiting ? I'm on the telephone .
answer:
formal