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'.

[EX Q]: Person1: I never understand why these shops have so much liquor .
Person2:What do you mean ? It's because it's much cheaper to buy liquor duty-free .
Person1: But why ? Why don't people like to buy shirts duty-free ? Or shoes ? I just don't understand why it's always liquor .
Person2:Well , it's because in most countries liquor has a higher tax on it .
Person1: You mean liquor has a higher tax than other things ?
Person2:Yes , of course . Didn't you know that ?
Person1: No , I didn't . How high is the tax ?
Person2:Well , it is different in different countries.But it's because of the high tax that buying liquor duty-free is such a good deal .
Person1: Why would the government want to tax liquor so much ?
Person2:Liquor is considered a luxury item.And also , it is considered as something that isn't very healthy.So if people want to buy it , the government thinks it has the right to tax it .
Person1: That's why a lot of people buy cigarettes here too , isn't it ?
Person2:Of course . Cigarettes are also taxed very heavily .
[EX A]: formal

[EX Q]: Person1: I Don't know how they do it ! Our competitors have undercut us by 10 % percent on the price of our latest model . There is no way will be able to compete against that . We're barely breaking even with the present prices .
Person2:These price wars are disastrous for our bottom line . If they're charging 10 % less than we are , we've got to find a way to lower our price while keeping our profit .
Person1: Profits are almost nonexistent now , we can't beat their price . How do they keep their price so low ?
Person2:We can try to lower our cost of production then . We need a price that we can compete with , something comparable with the competition .
Person1: You really think we can make it ? I don't have much faith in our ability to lower the price again . We're no match for them , the competition will beat us hands down .
[EX A]: formal

[EX Q]: Person1: This cake is excellent . Where did you buy it ?
Person2:Actually , my mother made it from scratch .
[EX A]:
informal