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: Would you like to come out with me tonight ?
Person2:Sorry , I can ' t .
Person1: Tomorrow night , then ?
Person2:I ' d like to . But I ' m afraid I can ' t .
Person1: I was wondering if you like to go to the theatre then .
Person2:That sounds great .
Person1: Ok . How about give me a ring , then ?
Person2:No . I ' d better not .
Person1: Why not ?
Person2:Because I don ' t think my husband would like it . Thank you for inviting me anyway .
answer:
formal

question:
Person1: When in Rome , do as the Romans do , they say .
Person2:What do you mean ?
Person1: Roman is living in Rome , of course . And go to work by car , or bus , or on foot .
Person2:I think the Romans do what everyone else does .
Person1: Certainly .
Person2:And Roman really loves life . He knows how to enjoy himself .
Person1: Not always . But they like good meal .
Person2:Really ?
Person1: How can I go there to have a taste ?
Person2:By air of course .
answer:
informal

question:
Person1: What would you like to have in your breakfast , bread , egg or sandwiches ?
Person2:Bread .
Person1: And milk or orange juice ?
Person2:Orange juice .
Person1: What would you like for lunch , pork , mutton or beef ?
Person2:I think mutton is best .
Person1: What kind of drink do you like most , red wine , beer or champagne ?
Person2:I like champagne .
Person1: And among apples , oranges and bananas , which is your favorite ?
Person2:Banana of course .
Person1: Do you always have meals outside or in your house ?
Person2:I always have meals outside , because I ' m not good at cooking .
answer:
formal