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 Jane , can you let me know the best way to get to your house this evening ?  
 Person2:Certainly , where will you be coming from ?  
 Person1:        I need to be in the city centre this afternoon so I will be coming straight from there .  
 Person2:Ok . Take the Underground ( the Circle line ) to High Street Kensington . Make sure you take the High Street Kensington exit .  
 Person1:        Got that .  
 Person2:Ok - when you leave the Underground , cross the road and you should see Horntown Street . Was up that street to the crossroads . As you was you should see a fast food place on your right .  
 Person1:        Hold on , I am looking at the map now . Ok , I can see Horntown Road . Do I go straight at the intersection ?  
 Person2:No , you need to turn left into Philimore Was and take the next right .  
 Person1:        Ok , I can see that road .  
 Person2:That's fine . You will not miss it because it's just next to the Kensington centra Library .  
 Person1:        Good , I can see the library on the map .  
 Person2:Ok , we live in the third building on your left . Will we see you around 7 pm ?  
 Person1:        That's great , see you at seven . 

informal