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'.
One example: Person1: Hey man , you wanna buy some weed ?
Person2:Some what ?
Person 1:Weed ! You know ? Pot , Ganja , Mary Jane some chronic !
Person2: Oh , umm , no thanks .
Person1: I also have blow if you prefer to do a few lines .
Person2: No , I am ok , really .
Person1: Come on man ! I even got dope and acid ! Try some !
Person2: Do you really have all of these drugs ? Where do you get them from ?
Person1: I got my connections ! Just tell me what you want and I ' ll even give you one ounce for free .
Person2: Sounds good ! Let ' s see , I want .
Person1: Yeah ?
Person2:I want you to put your hands behind your head ! You are under arrest !
Solution is here: informal
Explanation: Based on the conversation, we can see that there is a presence of exclamation which is not present in a formal discussion. Therefore this is an informal conversation

Now, solve this: 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 .
Solution:
informal