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: Good afternoon . I believe that this house is for sale .
Person2:That's right .
Person1: May I have a look at it please ?
Person2:Yes , of course . Come in .
Person1: How long have you lived here ?
Person2:I have lived here for twenty years .
Person1: Twenty years ! That's a long time .
Person2:Yes , I have been here since 1976 .
Person1: Then why do you want to sell it ?
Person2:Because I have just retired . I want to buy a small house in the country .
Person1: How much does this house cost ?
Person2:6850 pound .
Person1: That's a lot of money !
Person2:It's worth every penny of it .
Person1: Well , I like the house , but I can't decide yet . My wife must see it first .
Person2:Women always have the last word .
informal

Person1: Hello , is Jack there ?
Person2:Speaking .
Person1: Jack ! It ' s Rose here .
Person2:Hi , Rose . How ' s everything ?
Person1: Fine , thanks . I ' m having several friends over for dinner this Saturday . And I was wondering if you have the time to join us .
Person2:Sounds good . What time do you want me to come ?
Person1: Is six o ' clock okay ?
informal

Person1: Hi , Mike . Haven't seen you for a while . How's Cathy ?
Person2:We are not seeing each other any more .
Person1: What happened ? Did you break up ?
Person2:Yeah . I got sick and tired of her nagging all the time .
Person1: Oh , I am sorry . Maybe you were just emotional at that moment . Do you think you guys can get back together ?
Person2:I don't know . There ' s plenty of fish out there in the sea !
Person1: Oh , you are such a dog !
informal