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'.

Let me give you an 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 !
The answer to this example can be: informal
Here is why: 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

OK. solve this:
Person1: Hey . Owen ! Have you gone on your family vacation yet ?
Person2:Oh , yes . I got so tired . My son began to cry the moment we got on the train . It was very embarrassing because we took the over-night train and the noise made it difficult for other people in the cabin to sleep .
Person1: Didn't you bring his favorite toy ?
Person2:Yes , we did . Fortunately we put his Teddy Bear in the bag , and finally he fell asleep at mid-night with it in his arms .
Person1: Where did you go ? You've got a beautiful tan .
Person2:My wife didn't like to go to amusement parks , so we compromised and finally went to the seaside . I think vacation in summer is not good .
Person1: You must have had a great time . Most children love to play in the sand on the beach and go swimming .
Person2:Yes , he was every excited to see the blue sea and picked up many seashells to give as gift for his classmates in kindergarten .
Person1: His friends will be very happy to get the little souvenir .
Person2:And I taught him how to swim in the sea . It was fun and made him braver than before . After we returned home , he wasn't afraid to sleep alone in his bedroom .
Answer:
formal