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: Could I please get the address, hotel type, and phone number first? Sentence2: Yes, it is Da Vinci Pizzeria and is located at 20 Milton Road Chesterton. Is there anything else you need? Sentence3: I have your table reserved. Your reservation number is QYB6YHUQ . Sentence4: Was there anything else you needed today? Sentence5: Let first take care of your room reservation. What days would you like to book your room? I will check for availability. Sentence6: There is one place, shall I book it for you? Sentence7: i need to book for 1 people at 13:45 on sunday. remember the reference number please Sentence8: Thank you, goodbye. Sentence9: Great ty so much. I was wondering if you can help me find a place to eat that serves Italian in the north? Sentence10: It is located at 56 saint barnabas road, it is a guesthouse, and the phone number is 01223525725. Sentence11: I need to book a room at alexander bed and breakfast and also what restaurants are near there ? Sentence12: Is that restaurant in the cheap price range? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System