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: Hello !
Person2:Is that the box-office ?
Person1: Yes .
Person2:I'd like to book two tickets for the film ' Jane Eyre ' for this evening , please .
Person1: Just a minute please . Oh , I'm sorry , all the tickets for tonight have been sold out .
Person2:What a pity ! How about tomorrow evening ?
Person1: Oh , you're lucky , there are just two tickets left . Do you want to take them ?
Person2:Wonderful , I'll take them .
Person1: OK , your name and telephone number please .
Person2:Wang Min . Telephone number is 13811658 . Can I pick the tickets this afternoon ?
Person1: Yes , of course .
Person2:Thank you very much .
[EX A]: informal

[EX Q]: Person1: Have you any tour route to Budapest ?
Person2:Yes , I have , sir . How long are you going on vacation ?
Person1: About 2 weeks .
Person2:I recommend you this route . We call it golden routes for the sightseeing spots .
Person1: Well , will you offer me any reduction since it's a out-of-season tour ?
Person2:Of course , we will , sir .
[EX A]: formal

[EX Q]: Person1: How's your new car ?
Person2:Perfect ! Couldn't be better .
Person1: You made a good choice , then ?
Person2:It's just what I want .
Person1: No regrets .
Person2:I am really pleased with it .
Person1: I am glad you are happy .
Person2:It's super .
[EX A]:
informal