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: Let me see . How much should I pay for you ?
Person2:Don ' t think about it !
Person1: No , this will not do . Let me see .
Person2:You pay for the taxi and dinner , then to even things up .
Person1: Good ideas .
[EX A]: informal

[EX Q]: Person1: I noticed your absence in class this morning .
Person2:I'm sorry , I overslept .
[EX A]: informal

[EX Q]: Person1: Hey Rachael , what's up ? How is your day ?
Person2:Not bad.We have had a big meeting today , remember ?
Person1: Oh , yea . I forgot.So how did it go ?
Person2:Pretty well . I think the boss liked my ideas .
Person1: Great , so what happens now ?
Person2:Well , I have to write the proposal . I'm pretty excited about it .
[EX A]:
informal