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 Input:
Person1: I heard that James was fired because he got a keep back of 20 thousands dollars from a vender .
Person2:That ' s open secret .
Person1: But mine could be a lie for his job .
Person2:How did you know that ?
Person1: A little bird whispered to me . Keep that to yourself .

Ex Output:
formal

Ex Input:
Person1: What's the matter , Lisa ? You don't look too good .
Person2:I just found out that my husband is cheating on me .
Person1: You mean Mark ? He seems like such an honest guy .
Person2:That's what I thought . It seems that he's been seeing someone else for about two months .
Person1: Two months ? How did you find out ?
Person2:I asked for leave and was at home when the telephone rang . I picked it up and a girl asked to talk to Mark . She then asked if I was his sister , and I said no , I was his wife . She hung up immediately .
Person1: So you asked him about the girl who called ?
Person2:Yeah , he first said it was someone from work . He gave me a lame excuse , and so I pressed him on it .
Person1: What'd he do ?
Person2:He kept trying to make stupid excuses , and then broke down and admitted to a small indiscretion .

Ex Output:
formal

Ex Input:
Person1: How are you doing , Christopher ?
Person2:To be honest , I'm really fed up with work at the moment . I need a break !
Person1: Are you doing anything this weekend ?
Person2:I have to work on Saturday all day ! I really hate my job !
Person1: Are you available on Sunday ?
Person2:Yes , that's my only day off until Thursday .
Person1: Ok , well , my friends and I are planning on going to the beach on Sunday . We tend to leave around noon whenever we go anywhere , so you could still sleep in . Do you want to come with us ?
Person2:That'd be fantastic ! Which beach are you going to ?
Person1: It's a quiet beach just about an hour outside of the city .
Person2:What should I bring with me ?
Person1: We've got plenty of inflatables , but if you want to sit on a chair , you'll have to bring your own sunlounger .
Person2:I can just use my beach towel . I love lazing around in the sun .
Person1: Do you like surfing ?
Person2:I've actually never tried . Do you have a surfboard ?
Person1: We've got a few . I can teach you how to surf on Sunday . It'll be fun !
Person2:I can't wait ! It sounds like we're going to have a great time . How much money should I bring ?
Person1: You'll just need roughly $ 10 for food and gas money . My friend is driving , so we usually all chip in a few dollars for gas money .
Person2:Ok , where and when should I meet you ?
Person1: We'll pick you up at your place at noon . Be there or be square !

Ex Output:
informal