You will be given a definition of a task first, then some input of the task.
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'.

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 .
Output:
formal