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'.

Input: Consider Input: Person1: Hey Lydia , what are you reading ?
Person2:I ' m looking at my horoscope for this month ! My outlook is very positive . It says that I should take a vacation to someplace exotic , and that I will have a passionate summer fling !
Person1: What are you talking about ? Let me see that ... What are horoscopes ?
Person2:It ' s a prediction of your month , based on your zodiac sign . You have a different sign for the month and date you were born in . I was born on April 15th , so I ' m an Aries . When were you born ?
Person1: January 5th .
Person2:Let ' s see . . . you ' re a Capricorn . It says that you will be feeling stress at work , but you could see new , exciting developments in your love life . Looks like we ' ll both have interesting summers !
Person1: That ' s bogus . I don ' t feel any stress at work , and my love life is practically nonexistent . This zodiac stuff is all a bunch of nonsense .
Person2:No , it ' s not , your astrology sign can tell you a lot about your personality . See ? It says that an Aries is energetic and loves to socialize .
Person1: Well , you certainly match those criteria , but they ' re so broad they could apply to anyone . What does it say about me ?
Person2:A Capricorn is serious-minded and practical . She likes to do things in conventional ways . That sounds just like you !

Output: formal

Input: Consider Input: Person1: Hello , is this People's Theater ?
Person2:Yes , it is . May I help you ?
Person1: Yes , are advance tickets for ' Nut croakers ' still available ?
Person2:What date , sir ?
Person1: October 16th .
Person2:Let me see . Yes , we still have some tickets left . Which performance ?
Person1: 7:30 p . m . performance , please .
Person2:OK , we have tickets at 100 yuan and 50 yuan .
Person1: I'd like to reserve two seats at 100 yuan , please .
Person2:All right . May I have you name , please ?
Person1: Du Kun .
Person2:When would you like to collect the tickets ?
Person1: Tomorrow .
Person2:We can hold them until one day before the show .
Person1: How do we cancel , just in case ?
Person2:Just telephone us , and let us know in advance . We don't charge for cancellation .
Person1: All right , thank you very much . Good bye .
Person2:You are welcome . Goodbye .

Output: informal

Input: Consider Input: Person1: Hi , I would like to send this package to China , and these postcards as well .
Person2:Very well . You will need some stamps for the postcards and I need to weigh that package , too .
Person1: Great . How much is this going to cost ?
Person2:Well , it depends . Do you want to send it via priority , express or standard mail ?
Person1: What ' s the difference ?
Person2:Well , standard mail can take up to fifteen working days . Priority is a bit faster and will arrive in about five to eight working days . Express is the fastest , but it ' s also the most expensive . It only takes three days and you can track your package online .
Person1: I see . Well , there ' s no rush . Please send it via priority mail . Please be extra careful , the contents of the package are fragile .
Output: informal