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: How about an art museum? Sentence2: Yes, i am also looking for museums to visit in the centre of town. Sentence3: cambridge contemporary art has free entrance. Their phone number is 01223324222. Is there anything else I can help you with? Sentence4: I am looking for a place to stay on my upcoming visit. I can't wait to see some of your local tourist attractions. Sentence5: Get me one in the West place Sentence6: The Cambridge Art Museum is very popular and has no entrance fee. Is there anything else I can assist you with? Sentence7: Do you have their phone number and how much is the entrance fee? Sentence8: I am looking for a moderate priced 3 star hotel with free parking and free WiFi. Sentence9: Great, have a terrific stay! Sentence10: There are lots to choose from in the centre. Are you interested in art, archaelogy, antiques or history? Sentence11: Your reservation has been confirmed for 7 people staying 4 nights at the Hobsons House. Your reference number is KPO3GJ93 . Is there anything else I can help you with? Sentence12: I have found one in the south, the north and the west. Do you have a preference? They are all very comparable. Sentence13: Nope, that'll be all for today. Thanks so much for your assistance, you've been very helpful. Sentence14: The Hobsons House meets your criteria. Is there anything else I can do for you? Sentence15: Can you tell what area you will be staying in? Sentence16: Yes, can you reserve a room for me. There are 7 of us and we want to stay for 4 nights arriving on Sunday. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System