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'.

Ex Input:
 Person1:       Good afternoon , everyone . The experiment is to start at 3 . Have you gone through the instructions ?  
 Person2:Yes , sir .  
 Person1:        Ok , now some points for attention . First of all , pay attention to safety ... Now , sign your names on the lab record , and after that you can start . If there is any question , just let me know .  
 Person2:Excuse me , sir . This air compressor doesn't work .  
 Person1:        Have you turned it on ?  
 Person2:Yes , I have .  
 Person1:        Ok , I will get you another one .  
 Person2:Thank you . 

Ex Output:
formal


Ex Input:
 Person1:       Can I help you ?  
 Person2:Yes , I'm looking for a house .  
 Person1:        To buy or to rent ?  
 Person2:Oh , to rent .  
 Person1:        How much do you want to pay ?  
 Person2:About 300 a month .  
 Person1:        Well , I've got one here . It's 260 a month .  
 Person2:How big is it ?  
 Person1:        It's got a kitchen , a bathroom , and one bedroom .  
 Person2:Well , actually I prefer something a bit bigger if that's possible .  
 Person1:        Yes , I think so . There is also an interesting one.It ' s opposite the park .  
 Person2:How much is it ?  
 Person1:        It's 325 a month . It's the biggest we've got in this area .  
 Person2:What's it like ?  
 Person1:        Well , There're two bedrooms , a sitting room , a kitchen and a bathroom .  
 Person2:It sounds interesting . Can I go and see it ?  
 Person1:        Of course , Sir . 

Ex Output:
informal


Ex Input:
 Person1:       Have you seen the new Hannibal Letter movie ?  
 Person2:Oh , yes . You ?  
 Person1:        Yes . What did you think of it ?  
 Person2:I thought it was better than the others-I really liked it.What did you think of it ?  
 Person1:        I liked it , too . It was scary , but not disgusting . I always enjoy watching Anthony Hopkins . He's brilliant .  
 Person2:Mmm . That's what I thought , too . And I always enjoy watching Anthony Hopkins .  
 Person1:        Oh , yes , he is brilliant . What's the name of the young actor ?  
 Person2:Hum , Edward Norton , or something like that .  
 Person1:        Yes . He was excellent . They worked well together . 

Ex Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
informal


