Detailed Instructions: 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'.
See one example below:
Problem: 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
Explanation: 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

Problem: Person1: Post office offer lots of services nowadays , don ' t they ? Years age , you only really used the post office to send mail , save money , and send or collect money .
Person2:Nowadays , they offer so many services , you hardly know which one to choose . Take mailing for example . Do you send something first class or second class or do you use EMS ?
Person1: I save money in a post office saving account . There used to be just one kind of account , but now there are several . They each have different conditions and interest rates .
Person2:You can buy things at post office that were never sold there before . You can buy sweets and chocolates , newspapers , birthday and Christmas cards ...
Person1: Post offices are still the place to go to collect welfare benefits , like unemployment benefit and child support benefit . The queue are very long on the days when people collect those payment .
Person2:My son likes going to the main post office . They have a philately counter where he can buy stamps for his collection .
Person1: Do you think that the service at post offices has improved ?
Person2:I think it ' s better for some things , like sending and receiving money , but if you need to post something it sometimes takes longer than it used to .
Person1: I like being able to buy newspapers and magazines at the post office . It means that I don ' t need to go to two places
Solution:
formal