Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: Any in the south? Sentence2: I am not finding a boat attraction in the South. There are other types of attractions. Did you have anything else in mind? Sentence3: Okay. Can you just provide the address? Sentence4: Sure, how about a theatre attraction? Sentence5: Is there anything else I can help you with? Sentence6: I'm sorry, I not have the information about the entry fee. Sentence7: I need a train on sunday from cambridge to kings lynn. I'd like to arrive by 09:45. How long is the travel and what is the price? What is train ID? Sentence8: Okay, thank you. May I get the entrance fee please? And also the address? Sentence9: That is all, thank you! Sentence10: The Junction is a theatre in the south side on Clifton Way. Would you like more information about it? Sentence11: No, I don't need the booking today. Sentence12: I'm looking for a boat attraction in the south. Sentence13: Thank you, I'm glad that I could help! Sentence14: The address is simply Clifton Way. No number. Sentence15: I can put you on TR8042 leaving Cambridge Sunday at 8:11 and arriving at 8:58. It will take 47 minutes and costs 7.84 pounds. Sentence16: There are plenty attractions to choose from. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System