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:       Have you any tour route to Budapest ?  
 Person2:Yes , I have , sir . How long are you going on vacation ?  
 Person1:        About 2 weeks .  
 Person2:I recommend you this route . We call it golden routes for the sightseeing spots .  
 Person1:        Well , will you offer me any reduction since it's a out-of-season tour ?  
 Person2:Of course , we will , sir . 

formal