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: Thanks for offering to give me a lift . I ' m looking forward to this party , but I didn ' t want to go alone .
Person2:Don ' t mention it . It ' s my pleasure . Have you been to one of these large , sit-down dinner parties since you got to New Haven ?
Person1: No , this is my first.Last week I went to a cookout for new professors at Dean Barksdale ' s home . I took a taxi because I didn ' t want to be late.But I was the first one
Person2:Cookouts often start slowly . A two o ' clock start means you arrive any time after two .
Person1: Thanks for telling me this .
Person2:I was late getting back from the mall , but I ' m hurrying .
Person1: Why are you in such a hurry ? They said , Dinner at eight , and it ' s only seven-fifteen . I don ' t want to be the first one there again .
Person2:Don ' t worry . We won ' t be the first .
Example Output: informal

Example Input: Person1: I ' Ve got this really neat idea , you can hire a car and drive straight there .
Person2:Are you nuts ? What would my friends think if they see me in a hired car ?
Person1: But that ' s the quickest way to make your plans work .
Person2:Oh this is hard ! Well , I ' ll see what I can do .
Example Output: informal

Example Input: Person1: Hey John , nice skates . Are they new ?
Person2:Yeah , I just got them . I started playing ice hockey in a community league . So , I finally got myself new skates .
Person1: What position do you play ?
Person2:I ' m a defender . It ' s a lot of fun . You don ' t have to be able to skate as fast on defense .
Person1: Yeah , you ' re a pretty big guy . I play goalie , myself .
Person2:Oh , yeah ? Which team ?
Person1: The Rockets .
Person2:Really ? I think we play you guys next week . Well , I have to go to practice . See you later .
Person1: All right , see you later .
Example Output:
informal