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: Jane's mother always wants her to marry a big shot . J
Person2:That is just wishful thinking . The cost of higher education has increased in recent years , faster than the cost of living . So she wants Jane's brother to go on studying and earn his doctorate by means of it .
Person1: But it's unfair for Jane .

Output: informal

Input: Consider Input: Person1: Do you like traveling ?
Person2:Yes . I ' Ve just come back from Scotland .
Person1: Where did you visit ?
Person2:I only had time to visit Edinburgh .
Person1: How did you like it ?
Person2:It ' s fantastic .
Person1: Where did you go there .
Person2:I went to there on business .
Person1: And do you have friend there ?
Person2:Yes , a lot of friends .
Person1: You must enjoy yourself .
Person2:Yes . And I took many pictures .

Output: formal

Input: Consider Input: Person1: Hi ! Ed , what's up ?
Person2:Nothing .
Person1: Doesn't look like it to me .
Person2:Just get out of my face !
Person1: Woo , easy .
Person2:Leave me alone !
Person1: What are you so ticked off about ?
Person2:I don't want to talk about it .
Person1: Maybe I can help .
Person2:I blew the finally exam .
Person1: You've got to be joking .
Person2:No , I'm not .
Person1: Well , don't get bend on a ship about it .
Output: informal