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'.

Ex Input:
Person1: I bought it . I got a watch , too . The company that sells this car has a car club .
Person2:Where you can buy lots of paraphernalia ?
Person1: Yeah , and meet other drivers of the same car !
Person2:Cool !
Person1: I know girls love this kind of car . Look , it's got a sunroof ! Imagine ... a cool , starry night ...
Person2:So , you're going to use Sarah's car to go cruising for chicks ?
Person1: No . I borrowed it to go shopping .

Ex Output:
informal

Ex Input:
Person1: Who is responsible for the accident ? Is it Tony ' s fault ?
Person2:No . I don ' t suppose he ' s to blame . The man in the other car made a big mistake .
Person1: You mean Tony is the victim ? No , I don ' t think so . He ' s equally responsible because he tried to overtake you .
Person2:Yeah . I think everyone should go easy on driving .

Ex Output:
formal

Ex Input:
Person1: Did you watch television last night , Charles ?
Person2:Yes , I did .
Person1: It was a good game , wasn't it ?
Person2:Oh , I didn't watch the football match . I wanted to but my wife preferred to see the old film .
Person1: What a pity . It was quite exciting . Both teams played very well .
Person2:How did it finish ?
Person1: It finished in a draw . What was the film like ?
Person2:It was quite good . But . I missed the beginning of it because I had to eat first .
Person1: Did your wife enjoy it ?
Person2:No , she didn't . After half an hour she stopped watching and started to read a book .

Ex Output:
formal