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'.

[Q]: Person1: Just make yourself at home .
Person2:Thank you . You are cooking up a storm .
Person1: Wouldn't you like some more chicken ?
Person2:No , thank you . I'm afraid I can't take in anymore .
[A]: informal

[Q]: Person1: Hi , Jason !
Person2:Hi , Linda . I have two concert complimentary tickets . Will you go with me tonight ?
Person1: With the greatest pleasure ! Where is the concert held this evening ?
Person2:It will be held at the Central Music Hall .
Person1: What is on the program ?
Person2:It ' s a piano solo . I'm fond of piano , you know .
Person1: Hah ! OK . Let ' s go together !
Person2:Let ' s meet at the park at 6:00 .
Person1: See you then .
[A]: informal

[Q]: Person1: Michael Johnson doesn ' t look graceful , but he sure is powerful .
Person2:If I were on as many steroids as he was , I think I ' d be powerful , too .
Person1: What are you talking about ? ! He ' s passed every drug test he ' s taken !
Person2:Those drug tests don ' t mean anything ! He probably took some other drugs to mask the steroids .
Person1: Just because Ben Johnson was juiced up doesn ' t mean all athletes are .
Person2:OK , OK . I ' m feeling a little dehydrated . Let ' s get something to drink .
[A]:
informal