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:       Well , we've settled the question of price , quality and quantity . Now what about the terms of payment ?  
 Person2:We only accept payment by irrevocable letter of credit payable against shipping documents .  
 Person1:        I see . Could you make an exception and accept D / A or D / P ?  
 Person2:I'm afraid not . We insist on a letter of credit .  
 Person1:        To tell you the truth , a letter of credit would increase the cost of my import . When I open a letter of credit with a bank , I have to pay a deposit . That'll tie up my money and increase my cost .  
 Person2:Consult your bank and see if they will reduce the required deposit to a minimum .  
 Person1:        Still , there will be bank charges in connection with the credit . It would help me greatly if you would accept D / A or D / P . You can draw on me just as if there were a letter of credit . It makes no great difference to you , but it does to me .  
 Person2:Well , Mrs . Wang , you must be aware that an irrevocable letter of cred it gives the exporter the additional protection of the bank er's guarantee . We always require L / C for our exports . And the other way round , we pay by L / C for our imports .  
 Person1:        To meet you half way , what do you say if 50 % by L / C and the balance by D / P ?  
 Person2:I'm very sorry , Mrs . Wang . But I'm afraid I can't promise you even that . As I've said , we require payment by L / C . 
formal

 Person1:       I don't know what to do about the people who live in the flat above me !  
 Person2:Why ? What are they like ?  
 Person1:        They're incredibly selfish . They ' re always up until the wee hours of the night playing their music so loudly that I have to wear earplugs in order to fall asleep !  
 Person2:Have you ever talked to them about it ?  
 Person1:        I tried to introduce myself to them when they moved in , but they were so arrogant that I didin't want to ever talk to them again !  
 Person2:What did they say ?  
 Person1:        They both just talk about how great they are all the time .  
 Person2:They soud like the neighbours from hell !  
 Person1:        They are ! Besides being loud and arrogant , they're also terrible gossips . They're always talking about everybody else in the apartment .  
 Person2:I thought you didn't talk to them much .  
 Person1:        I don't , but they talk so loudly that I can hear what they're talking about from my bedroom - and it's not very nice .  
 Person2:What do the other people in your apartment think about them ?  
 Person1:        Most of my other neighbours are scared of them .  
 Person2:Maybe you should think about moving .  
 Person1:        I can't afford to move right now .  
 Person2:Well , perhaps you should have a party and try to get to know them better . Maybe once you get to know them , they'll turn out to be more sensitive .  
 Person1:        I think you're being a bit optimistic . If you met them , you'd understand .  
 Person2:Well , I don't know what else you could do then . Do you think bribing them with chocolate would work ? 
informal

 Person1:       May I have an appointment with you tonight ?  
 Person2:Very sorry , I am occupied tonight . What about tomorrow night ?  
 Person1:        OK . where and when ?  
 Person2:7:00 in my staying hotel .  
 Person1:        OK , I am going to the hotel to pick you up . See you tomorrow night . 

informal

