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: I think we should accept his plan .
Person2:I'm afraid I can't agree with you .
Person1: Why ?
Person2:Simply because it's not practical at all .
[EX A]: formal

[EX Q]: Person1: Lester , you are really fantastic at automobile repair .
Person2:Thanks , June . But I think I need to be certified as a mechanic before I ' m allowed to repair cars for a living .
Person1: That ' s not a big problem . There are many small schools for adults like you who can study to be certified .
Person2:I guess I never thought of that before .
Person1: And you can easily get a student loan from a vocational school , or from the government .
Person2:Wow , you ' Ve inspired me to do something !
[EX A]: informal

[EX Q]: Person1: Have you received your TOWEL test results yet ?
Person2:Yes , I did . I passed !
Person1: Congratulations ! I knew you could do it .
Person2:Well , I certainly couldn't have done it without your help . You are the best tutor I've ever had .
Person1: Thank you , but it was your hard work that did it .
Person2:You deserve credit , too . I've learned so much from You .
[EX A]:
informal