Given the task definition, example input & output, solve the new input case.
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'.
Example: Person1: Hey man , you wanna buy some weed ?
Person2:Some what ?
Person 1:Weed ! You know ? Pot , Ganja , Mary Jane some chronic !
Person2: Oh , umm , no thanks .
Person1: I also have blow if you prefer to do a few lines .
Person2: No , I am ok , really .
Person1: Come on man ! I even got dope and acid ! Try some !
Person2: Do you really have all of these drugs ? Where do you get them from ?
Person1: I got my connections ! Just tell me what you want and I ' ll even give you one ounce for free .
Person2: Sounds good ! Let ' s see , I want .
Person1: Yeah ?
Person2:I want you to put your hands behind your head ! You are under arrest !
Output: informal
Based on the conversation, we can see that there is a presence of exclamation which is not present in a formal discussion. Therefore this is an informal conversation

New input case for you: Person1: If you go out recently you will find some people riding scooters in high streets and back lanes .
Person2:Yes . The German engineer would never dreamed that the hand - supported scooter he invented several years ago to solve his traffic problems would become so fashionable in the Occident within a few years and even spread to Japan and China .
Person1: Looking at the ' five sense organs ' of a scooter , it can be said as delicate and agile . To pull the T-shaped pole and make it vertical with the flat board and then pull it vertically , adjust its height suitable to you and you may use it .
Person2:Small and exquisite in size , easy to operate , foldable and easy to carry are its charms .
Person1: Your two hands hold the pole , stand on the board , the other foot steps back against the ground and controls well the balance of the body , then you can ride in the air . It has a feeling of surfing . You need not let other people teach you . Your fear will disappear quickly .
Output:
informal