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 , my name ' s Karl . My wife and I are moving in next door .
Person2:Hello , Karl . I ' m Chuck Jones . We ' re going to be neighbors .
Person1: I ' m happy to meet you . It seems everyone in town is so friendly .
Person2:This is a small town , and we like to be neighborly . We know everyone who lives around here .
Person1: Well , I ' m from Chicago . There few people take the time to get to know their neighbors .
Person2:So , tell me , Karl , why did you come all the way to Minnesota to live ?
Person1: We wanted to live in a more peaceful community and have more space . Another reason is , we can afford to buy a home here , but we can ' t in Chicago !

Output: formal

Input: Consider Input: Person1: Oh !
Person2:What fools we were !
Person1: To think of it ! All my old silver ! It meant so much to me .
Person2:And my new car . To think that he simply drove off with everything in my car . That's what hurts me most .
Person1: What's so terrible too , is the fools we've made of ourselves .
Person2:I hardly dare call the police . They'll just laugh at us .
Person1: I'll never get over it . Oh , Harry , it was all so unnecessary . That man ! ! How could he do this to us after we'd put him up ?
Person2:And his story didn't even hold together . I feel such an idiot .

Output: informal

Input: Consider Input: Person1: Is this the A housing office ?
Person2:Yes , it is . Are you looking for housing for this semester ?
Person1: I was hoping to get into something on campus , but my friend told me that everything is full .
Person2:It is , but I can put you on a waiting list , if you would like .
Person1: Please . And in the mean time , can I look at apartments available in the area from this office ?
Person2:Yes , here is a catalog that is put out every year with locations that meet campus requirements for As .
Person1: Who do I talk to if I want I to see some of them ?
Person2:The individual landlord's numbers are next to each entry . You can call them with any questions you may have .
Output: formal