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'.

[Q]: Person1: So Kevin , what is your type ?
Person2:I like girls who like to have fun , and aren't too serious .
Person1: I agree . I like guys that can make me laugh .
Person2:That's true . Having a very serious boyfriend or girlfriend can be boring .
[A]: informal

[Q]: Person1: You don ' t look like enjoying this workout .
Person2:I ' m not crazy about it at all .
Person1: You don ' t like this sort of exercise ?
Person2:I ' m not interested in it . Are you keen on it ?
Person1: Yes , that ' s funny . I thought you liked it .
Person2:I hate it .
Person1: Never mind . It ' ll be over in 10 minutes .
Person2:It ' s the worst thing I ' Ve ever tried .
[A]: informal

[Q]: Person1: Say , Anna , what are you doing tonight ? Would you like to go out ?
Person2:Oh , sorry , I can't . I'm going to work late tonight . I have to finish this report .
Person1: Well , how about tomorrow night ? Are you doing anything then ?
Person2:No , I'm not . What are you planning to do ?
Person1: I'm going to see a musical . Would you like to come ?
Person2:Sure , I'd love to ! But let me pay for the tickets this time . It's my turn .
Person1: All right ! Thanks !
[A]:
informal