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: Do you think it's time to sign the contract , Mr . Simpson ?
Person2:I'd like to look it over before I sign it .
Person1: OK , no problem . I hope there are no questions about the terms .
Person2:I am fully satisfied with the terms of this contract .
Person1: Shall we sign this contract now ?
Person2:OK . Where do you want me to sign ?
Person1: Just sign at the bottom .
Person2:OK . ( Sign ) Once a contract is signed , it has legal effect .
Person1: You're right . Thank you for your cooperation .
Person2:It's my pleasure .
answer:
informal

question:
Person1: Are you coming or not ?
Person2:I haven't decided yet .
Person1: Well , make up your mind . We need to know .
Person2:Ok , count me in .
answer:
formal

question:
Person1: It is obvious that their government is nursing the hope of having all other countries over a barrel and bring them completely under their control .
Person2:It ' s a typical of them to do so .
Person1: What can we do ?
Person2:We must keep developing our economy and unite with other developing countries to fight against it .
answer:
formal