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 Q]: Person1: Would you like some more rice ?
Person2:No , thanks . I'm full .
[EX A]: informal

[EX Q]: Person1: I wouldn't dare go bungee jumping .
Person2:Chicken !
[EX A]: informal

[EX Q]: Person1: What is up ?
Person2:Look at the dishes ! I have told you three times to put away these dishes . But now ...
Person1: Oh , don ' t be angry . I just thought you might need them sometime .
Person2:I have told you that I don ' t need them any more . The thing that really annoys me is that you played dumb with me .
[EX A]:
formal