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: Hi , Sara , what are you reading ?
Person2:Hi , John , I am trying to find a carpenter .
Person1: Why ?
Person2:Well , I want to build a deck in my back yard .
Person1: What for ?
Person2:So I can have a special place to hang out with friends , and also do some barbecuing on weekends .
Person1: That sounds cool . Do you mind if I recommend myself for the job ?
Person2:You ? Do you have a carpenter's license ?
Person1: Yes , of course . But I only freelance on weekends with my uncle .
Person2:Wow ! That's cool . So , let me give you some details about the deck I want .
Person1: Please go ahead , I am listening .
Person2:I'd like my deck to be at the same level as the back door .
Person1: Is your back door higher than the ground level ?
Person2:Yes , the back door is about four or five steps higher than the ground .
Person1: Okay , then you need a deck with a guardrail .
Person2:I don't like things to be fancy .
Person1: Don't worry . I will build your deck with a simple but classic look .
Person2:Hmm , that's good . Can you use cedar or redwood to build it ?
Person1: Cedar is a good choice .
Person2:Well , let's take the measurements right now .
informal

Person1: Is this the A housing office ?
Person2:Yes , it is . Are you looking for housing for this semester ?
Person1: I was hoping to get into something on campus , but my friend told me that everything is full .
Person2:It is , but I can put you on a waiting list , if you would like .
Person1: Please . And in the mean time , can I look at apartments available in the area from this office ?
Person2:Yes , here is a catalog that is put out every year with locations that meet campus requirements for As .
Person1: Who do I talk to if I want I to see some of them ?
Person2:The individual landlord's numbers are next to each entry . You can call them with any questions you may have .
formal

Person1: Is this the class to prepare for interviews ?
Person2:This is the right place . Please join us .
Person1: I have an interview tomorrow , so I hope I can learn everything quickly .
Person2:We are all going to have great interviews . What are some things that we need to remember in an interview ?
Person1: I think that we should make sure that our looks are the best they can be .
Person2:Right , and what about our friendliness and attitude ?
Person1: Yes , and being friendly and having a good attitude also help me relax .
Person2:Did you know that they pay as much attention to what you ask as to what you say in an interview ?
Person1: No , I didn ' t . What else should I keep in mind ?
Person2:Just relax , listen carefully to the questions , and be honest in your responses .
formal