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: Hello, I'm looking for local tourist attractions located in the west. May I please have that information? Sentence2: How about something that serves british food? Sentence3: Yes please for 4 people on saturday at 17:00. Sentence4: Clare hall is the best the address is herschel road. Sentence5: Yes tell me about the colleges. Sentence6: Yes, in the west, I have colleges and museums. Some are free and some cost several pounds. Would you like information for a college? Sentence7: Thank you. Could yo also find a Polish restaurant in the expensive range in the same area? Sentence8: There are five colleges in the west but the most prestigous one is churchill college, would you like more information? Sentence9: graffiti is very popular and suits all your needs. Can I book it for you? Sentence10: There are no expensive Polish restaurants in the west, are there any other sorts of restaurants you would like? Sentence11: Your table is booked, ref #U8T6LQEJ . Can I help you with anything else today? Sentence12: No. You're the best. Have a great day. Goodbye Sentence13: Could you pick the best on and give me the address? Sentence14: You have a great day as well! Goodbye! Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User