You will be given a definition of a task first, then some input 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: Well , that was an interesting documentary !
Person2:For sure ! I didn ' t really understand some of the technical jargon they used in the film when they talked about social security in the US .
Person1: Like what ?
Person2:Well , they mentioned how people put away money in something called a 401K ?
Person1: Yeah , I know it sounds weird , but a 401k is a type of retirement plan that allows employees to save and invest for their own retirement . Through a 401K , you can authorize your employer to deduct a certain amount of money from your paycheck and invest it in the plan . Everyone tries to contribute as much as possible so that when you retire , you can rest peacefully on your nest egg .
Person2:That ' s interesting and logical I guess . In my country , we also have to contribute to a government-run retirement fund , but most people don ' t really trust it so they just invest in properties or things like that .
Person1: That seems a bit unstable don ' t you think ?
Person2:Yeah , but corrupt governments in the past have created distrust among banks and financial institutions , so now people prefer to have money hidden in a jar or a piggy bank .
Person1: I ' Ve been thinking of doing that lately ! I don ' t want some banker to run off with my money !
Output:
formal