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'.

 Person1:       Is there anything I can do for you ? 
 Person2:Yes . I've received this Remittance Advice from the bank . 
 Person1:        Could I take a look at it , please ? Let me just check these details ... right . 
 Person2:Mr CK Chen contacted me this morning and asked me to come in for the remittance . 
 Person1:        I've got the details here . 10,000 RIB sent by Mr CK Chen from Guangzhou . Could I see some ID ? You passport , for example ? 
 Person2:Here you go . Can I deposit some into my account and take some in cash ? I need 1,000 RIB for my expenses , you see . 
 Person1:        That's no problem . Could you please sign here ? Here's the 1,000 RIB in cash , your passport back , and the remaining balance has been deposited in your account . 
formal

 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 . 
formal

 Person1:       Are you ok , Chuck ? You look pale .  
 Person2:I'm fine , Katherine . I just stayed up late last night working on my Chinese .  
 Person1:        Oh , poor you . You know what ? I found a new way to learn Chinese and it works very well .  
 Person2:You did ? Do tell me . I've spent all these months trying to learn something new about it , but I've made little progress !  
 Person1:        Sure . I'm learning Chinese through songs .  
 Person2:So you're learning Chinese songs ?  
 Person1:        You can say that . I can actually sing some of them now .  
 Person2:That's a real achievement . How did you do that ?  
 Person1:        I start by listening to the song a few times and after several times I am able to follow the singer .  
 Person2:It makes sense .  
 Person1:        It does . I've learned some Chinese folk songs this way . They are clearly presented and easy to follow .  
 Person2:Can Join you , Katherine ? I do want to have a try .  
 Person1:        Why not ? I downloaded a beautiful song the other day . We can learn it together now .  
 Person2:Great . Do you think we need a Chinese dictionary ?  
 Person1:        Yes , just in case we run into me new characters .  
 Person2:Ok . I will bring it with me . 

formal

