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: hi , come on in . Can I take your coat ?
Person2:sure , thanks . I brought you a bottle of wine as well .
Person1: you're the first guest to arrive . I'll just put your coat away and then I'll get you something to drink .
Person2:should I take my shoes off ?
Person1: whatever you prefer .
Person2:this is a very nice place . How long have you been living here now ?
Person1: just over three weeks . Would you like a drink ?
Person2:sure , what do you have ?
Person1: I've got white wine , red wine , gin and tonics , ginger ale , lemonade , orange juice , and sprite .
Person2:I'll have a glass of red wine please .
Person1: one glass of red wine coming up !
Person2:so how many people are coming for the dinner tonight ?
Person1: there's just going to be 6 of us tonight .
Person2:oh , I thought there were going to be eight . who isn't coming ?
Person1: Marcia and Paul called to cancel at the last moment . Paul was running late and Marcia wasn't feeling well .
Person2:that's too bad.They ' re such good company .
Person1: I think there's someone at the door .
Person2:excuse me while I go and get that .
[EX A]: formal

[EX Q]: Person1: Do you like a package tour or to travel alone ?
Person2:I prefer a package tour , and we don't have to worry about accommodation , meals or that sort of trivial demanding things .
Person1: I prefer travel alone . I'll have a lot of time lingering at one place .
[EX A]: formal

[EX Q]: Person1: You must be Mr.Sellers . I'm Steven . I am here to see the apartment you advertised .
Person2:Oh , nice to see you . The apartment is on the tenth floor . The previous tenant just moved out yesterday .
Person1: Could I have a look at it first ?
Person2:Sure . Let me show you the way . Here we are . Apartment 1008 . ( They enter . ) This is the living room dining room combination . Here's the kitchen . It's small , but fully equipped . The refrigerator is new , and the stove and the microwave oven are less than a year old .
Person1: It's nice . So this is the bathroom . And that must be the bedroom .
Person2:Yes . And there's a walk-in closet .
Person1: Is there air conditioning ?
Person2:Yes , there's central air conditioning and heating . The thermostat is in the living room
Person1: What's the house rent ? When is the rent due ? And how much security deposit do you require ?
Person2:It's 600 yuan per month.The rent is due no later than the tenth of the month . We ask that you leave a month's rent as a deposit . It will be returned to you at the end of your lease .
Person1: I like the apartment , Mr.Sellers . You can show me the lease .
[EX A]:
informal