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: Can I help you ?
Person2:Yes.When is the next train to New York City ?
Person1: Let me see ... the train to New York City ... here it is ... daily except Sunday at ten thirty , twelve twenty and fifteen ten .
Person2:Aren't there any trains before ten thirty ?
Person1: Sorry , not before ten thirty .
Person2:Then one to New York at ten thirty .
Person1: One way or round trip ?
Person2:One way .
Person1: A soft seat or hard one ?
Person2:How much is a soft ?
Person1: 15 dollars.And for a hard one , only 6 dollars .
Person2:Then one hard seat , please .
Person1: OK.Here is your change.The train leaves on platform 8 .
answer:
formal

question:
Person1: Good afternoon madam . What can I do for you ?
Person2:Hi . I want to check out . My room is 1005 .
Person1: OK . Please hold on a minute . So you checked in on Monday and stayed 3 nights in single room 1005 . Is that right ?
Person2:Yes . Can I have a look at my bill ?
Person1: OK . Here you are . If there are no questions , could we have your signature in the blank below ?
Person2:OK . I would like to have my receipt report , please .
Person1: Here it is . We are pleased to serve you here and we look forward to seeing you again . Wish you have a good day .
answer:
informal

question:
Person1: A friend of mine is now in the big house . He was caught red-handed for selling cocaine .
Person2:That is a deadly risky business . He should have it coming on him .
Person1: He must be regretting about having done the business .
Person2:I bet he is . He domed his own life .
answer:
informal