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: Would you please teach me how to use the computer ?
Person2:Sure , let's take a look at the menu first .
Person1: Do I have to turn on the computer ?
Person2:yes , we can look at the computer and computer menu at the same time . And this will help us understand both better .
Person1: What should I learn first ?
Person2:Right now I'll teach you to open files , save files and copy files . Are you ready ?
Person1: I am ready I am going to get , let's start !
[EX A]: informal

[EX Q]: Person1: There will be another sandstorm here tomorrow .
Person2:It's the fourth one this year . Isn't it horrible .
Person1: Yes . We should plant more trees and grass to stop the sand from spreading .
Person2:It may take many years for the trees to grow . I hope people will stop cutting down trees .
Person1: But we need the wood .
Person2:But we can't destroy our forests to get the wood .
[EX A]: informal

[EX Q]: Person1: I think the government needs a radical plan to improve things . The government just talks , but in the long run , nothing is done to improve the economy .
Person2:That's right . They always talk about a need for new , progressive tactics , but they haven't done anything to stimulate new jobs .
Person1: Well , income taxes were decreased last year in hope to give the economy a boost , but I think it's backfired . The immediate effect of the tax reduction was to cause inflation to rise .
Person2:The worst part is that the inflation hurts the poor more than the rich . It also leads to more unemployment in the long run . I don't know what a good solution would be to make the economy more vibrant again ...
Person1: I have a good solution ... We need some new blood ! We should get rid of this president and boat in some new leaders !
[EX A]:
informal