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: Who ' s this ? your girl-friend ?
Person2:No , it ' s my sister .
Person1: How old is she ?
Person2:She ' s 18 .
Person1: She is tall ?
Person2:Yes , she is .
Person1: And she is thin , isn ' t she ?
Person2:Well , just a little thin .
answer:
formal

question:
Person1: How much do you expect to earn ?
Person2:I think salary is closely related to the responsibilities of the job . Shall we discuss my responsibilities with your company first ?
Person1: If you are hired , you are in charge of the design of toys that can meet the needs of the American market .
Person2:I know it is a crucial position , but I can do it well . So I'm asking for 200,000 Yuan a year as a starting salary .
Person1: Ok .
answer:
formal

question:
Person1: Are you going to the party on Saturday ?
Person2:I was thinking about it . Are you ?
Person1: Yeah , I heard it's going to be a lot of fun .
Person2:Really ? Well , what time does it start ?
Person1: It starts at 8
Person2:Well , who all is going to be there ?
Person1: Everyone from school .
Person2:How do you know it's going to be so fun ?
Person1: This party is going to have a DJ , food , and drinks .
Person2:Wow , that does sound like it's going to be fun .
Person1: So am I going to see you at the party ?
Person2:Yeah , I will be there .
answer:
informal