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: Your total comes to $ 36.78 .
Person2:Put it on my VISA .
Person1: There ' s a problem with your card .
Person2:What ' s wrong with it ?
Person1: I believe it was declined .
Person2:You ' re kidding me !
Person1: Do you have another card I could try ?
Person2:I only have one card .
Person1: Do you have cash , perhaps ?
Person2:I don ' t have any cash on me .
Person1: You ' re not going to be able to take these items today .
Person2:I ' ll be back tomorrow .
[EX A]: informal

[EX Q]: Person1: Excuse me . What time does the next train to London leave ?
Person2:At 10:30 .
Person1: Is it a direct train to London ?
Person2:Yes , it is .
Person1: OK . Two tickets to London , please .
Person2:Single or return ?
Person1: Single , please . How much in total ?
Person2:10 pounds .
Person1: Here you are . Which platform should I go to wait for the train ?
Person2:It's platform 5 .
Person1: OK . Thank you .
Person2:You are welcome .
[EX A]: informal

[EX Q]: Person1: Did you enjoy the movie ?
Person2:Oh , it's really a drag .
Person1: Sorry to hear that . I think it's even better than On the Golden pond .
Person2:Hell with it ! Nobody will give it an Academy award !
[EX A]:
informal