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: Hi , Fanny .
Person2:Hi , Andy .
Person1: Are you feeling OK ? You sound a little tired this morning .
Person2:I did not sleep much last night . I really feel bad . It was a crazy night .
Person1: What happened ?
Person2:I had a bad dream . I was walking alone in the graveyard , and suddenly all the ghosts jumped out of their graves . They began to chase me through the graveyard and shouted that they wanted my blood .
Person1: Oh , what a nightmare ! Then what happened ?
Person2:My mother woke me up . She had heard me crying out for help .
Person1: You have got a great mother .
Person2:I felt embarrased . After all , I am 18 years old . Mom gave me some chocolate cookies and a glass of milk .
Person1: That sounds good !
Person2:Yeah , but i was afraid to fall back asleep . I am worrying about getting into the University of Michigan .
Person1: Me too . But I tell myself that if they don ' t accept me , another school will .

Output: formal

Input: Consider Input: Person1: Hey Lucas , how was your trip to Paris ?
Person2:It was wonderful , but I was so tired .
Person1: Did you go to the top of the Eiffel Tower .
Person2:Yes , that was the first thing we did . We went all the way to the top . There were visitorsfrom all over the world taking photos there .
Person1: What else did you see ?
Person2:Art galleries , cathedrals , statues , fountains , palaces , bistros , there's really too much to say .
Person1: You must have had a great time .
Person2:Yes , at the beginning we were all excited and had lots of fun . However , on the third day of travelling in the city , I felt sick I think I had something bad to eat but it passed by the evening .
Person1: Yes . you need to be careful with what you eat when you're abroad.sometimes new food might disagree with you .
Person2:On the fourth day , we went to taste the French cuisine . That was really fantastic . And no stomach problems .
Person1: That is great . Everyone says French food is wonderful .
Person2:You'll have to try for yourself some day .

Output: informal

Input: Consider Input: Person1: So you said you and Amanda met through a mutual friend . How did it happen ?
Person2:Well , my roommate was friends with Amanda , so he introduced us .
Person1: Did he tell you what she was like first ?
Person2:Yes , he described her to me , and she sounded like my type .
Output: informal