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'.

Example Input: Person1: Excuse me , sir ? I just need a little bit more information . Could you tell me your telephone number and mailing address ?
Person2:Sure . My number is 545-8897 , and I live at 908 Mulbury Street .
Person1: That ' s 545-8897 and your mailing address is 908 Mulbury Street . The zip code is 20310 , right ?
Person2:That ' s right .
Example Output: formal

Example 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 .
Example Output: formal

Example Input: Person1: What ' s your new job like ?
Person2:Oh , it ' s fine . I ' Ve got a very nice secretary and a large pleasant office .
Person1: Um .
Person2:And a company car .
Person1: Very nice .
Person2:Yes , it is . But I ' Ve got a lot of work too .
Person1: Well , that ' s life , isn ' t it ?
Example Output:
informal