You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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'.

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 !
Solution: informal
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

New input: Person1: Hi , Bill . Are you going to the commencement ?
Person2:Yes . Do you want to go with me ?
Person1: OK . ( Several minutes later . ) Let's go into the school auditorium .
Person2:Now that take this seat . Do you see those piles of red diplomas on the desks on the stage ?
Person1: Yes . I find my heart is now rising and falling like waves , all sorts of feelings welling up in my heart .
Person2:That's true . Four years ' trails and hardships , joys and sorrows of life are gushing out to my mind all together . I can hardly tell whether I am joyful or gloomy at the moment when I am about to leave the campus and to start a new stage of my life .
Person1: How time flies . Look , the president of the college has come onto the stage .
Person2:He's going to make the opening speech .
Solution:
informal