Definition: 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'.
Input:  Person1:       Hi , excuse me . I am sorry to bug you , but do you know where the Royal Hotel is ?  
 Person2:Just a minute . I am as busy as a bee right now ... Ok , I am done . What can I do for you ?  
 Person1:        Well , I seem to be a little bit lost here . I am worried that I ’ ll never find my way . What's worse . I forgot my glasses and as blind as a bat now .  
 Person2:Well , keep you chin up ! I ’ ll try to help you . Where are you going ?  
 Person1:        I am trying to get to the Royal Hotel . Do you know where that is ?  
 Person2:Yes , no problem . You walk down this street . You turn left at the first intersection . Walk along that road , turn right at the corner . After that , you make a left-hand turn at the first traffic light . The Royal Hotel is on your right side .  
 Person1:        Great . Are there any landmarks nearby ?  
 Person2:Yeah , I think so . I think the hotel is right across the street from a post office . It is as plain as the hump on a camel . You can't miss it .  
 Person1:        Oh , that's good . I should be able to find it pretty easily then . Is that far from here ?  
 Person2:Yeah , it ’ s gonna take you a while if you go by foot . I ’ d say it's about a 30 - minute uphill walk . You have to be as strong as a lion to make it .  
 Person1:        Oh , that will take too long and I am kind of in a hurry . Can I take a bus there ?  
 Person2:Well , you could take a bus there , but you would have to transfer buses twice . A taxi would probably be a lot quicker .  
 Person1:        All right . I guess I'll take a taxi then . How long will it take by taxi ?  
 Person2:Not too long . It should take about ten mins by taxi .  
 Person1:        Cool , thanks .  
 Person2:You are welcome . 

informal