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'.
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Question: Person1: Let me see . How much should I pay for you ?
Person2:Don ' t think about it !
Person1: No , this will not do . Let me see .
Person2:You pay for the taxi and dinner , then to even things up .
Person1: Good ideas .

Answer: informal

Question: Person1: What do you base our grades on ?
Person2:All of your coursework is important , including everything from attendance and homework to all of your test results for the semester .
Person1: Does the final count the most ?
Person2:All of it is important ; please just do your best at all times .
Person1: How do you total our scores ?
Person2:The final and mid-term are twenty percent each ; homework , attendance , and quizzes are the rest .
Person1: What if we are out sick ?
Person2:Make sure you contact me as I only allow one unexcused absence .
Person1: How can we know if we are doing OK during the year ?
Person2:Your grade will not be a surprise ; you will know what you need to work on .

Answer: formal

Question: Person1: Good morning , everybody . Welcome to IAM Technology . I'm very pleased so many of you could make it here today . My name's Sam Weiss . I'm the Production Manager . I'd like to show you the layout of the factory before we go and visit it . As you can see from this diagram , everything is under one roof . We've designed it this way to help the flow of materials and to avoid bottlenecks .
Person2:This area here is where we keep our raw materials . The main production area - our machine hall - is situated next to it . Maintenance is situated between the stores and the production area . Just to the right of Maintenance , there are steps up to the Lab and the Admin Section . Process Control is also on the upper level . It's located above the factory floor so that the operators can monitor everything that is going on below .

Answer:
informal