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'.

[Q]: Person1: Is the environment a big issues in your country ? It is in mine .
Person2:It is in mine too.The biggest issue is water . The climate is dry and so water conservation is very important .
Person1: What methods do you use to conserve water ?
Person2:Water is rationed . We can only use a certain amount each month . It means that we cannot use some modern household items , like washing machines . They use too much water .
Person1: I see . I think the biggest environment problem in my country is air pollution .
Person2:Yes , I agree . The air here is much more polluted than in my country . Of course , my country is more agricultural and has much less industry .
Person1: We have reduced emission of air pollutants in recent years , but cars are still a major source of them . Factories have become cleaner as stricter environment pollution law have been introduced .
Person2:The problem is now on a truly global scale . I don ' t believe that any single country can do anything about it .
Person1: I think you ' re right . There needs to be an international response to this problem .
[A]: formal

[Q]: Person1: When in Rome , do as the Romans do , they say .
Person2:What do the Romans do ?
Person1: They live in Rome , of course , and go to work by car or bus . But sometimes it takes too long that way because of the traffic jams , so they walk .
Person2:In other words , the Romans do what everyone else does .
Person1: Yes , but they do it differently . Everything is different .
Person2:What do you mean ?
Person1: Well , the climate's different for a start . It doesn't rain so much as it does in England . The sun shines more often .
Person2:I envy them the sun .
Person1: I know . You hate the rain , don't you ?
Person2:I certainly do .
Person1: And a Roman really Ioves life . Eye knows how to enjoy himself .
Person2:They always eat spaghetti and drink wine , don't they ?
Person1: Not always . But they like a good meal . Lots of tourists go to Rome just for the food , you know .
Person2:Really ? How much does it cost to fly to Rome ?
Person1: I don't know exactly , but it costs a lot of money .
[A]: informal

[Q]: Person1: I'm afraid I have lost my air ticket while I was shopping .
Person2:I'm sorry to hear that.Did you check your shoulder bag carefully ?
Person1: Yes , I checked again and again , but I can't find it . By the day after tomorrow , can I have the ticket reissued ?
Person2:I'm afraid you can't .
Person1: I talked with the manager over the phone and he told me I can have it reissued because I have a copy of my lost ticket .
Person2:Oh , I see . I'll call the manager , then .
[A]:
formal