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: Sure , their number is 07328080907. What else can I help you with today? Sentence2: The Gardenia is a cheap Mediterranean restaurant. Would you like me to make reservations there for you? Sentence3: No problem, enjoy the rest of your day. Sentence4: I'm looking for something cheap, I'm on a budget. Sentence5: There are 13 colleges in the centre. Gonville and Caius college is fascinating and it is free. Does this appeal to you? Sentence6: I can help you with that. What time do you want to leave the college and arrive at the gardenia? Sentence7: I need to find a place to visit while in town. What attractions are in Centre? Sentence8: Thanks. Can I get the taxi company's contact phone number please? Sentence9: There are a lot! We have some impressive architecture, historic colleges, theatres, and more. What sort of thing appeals to you? Sentence10: You got it! The Gardenia is located at 2 Rose Crescent City Centre, cb23ll. The phone number is 01223356354. What else can I do for you? Sentence11: That's all I needed. Thank you. Sentence12: I want to leave at least by 14:45 if that is okay. Sentence13: Is it free? I also am looking for a Mediterranean restaurant in the same area. Sentence14: Yes the college entrance is free. I also found 3 restaurants with mediterranean cuisine in the same area. two are in the centre. can you give a price range? Sentence15: Sounds good. Can I get the address with the postcode for that one, please? Sentence16: I'd like to see a college, please. Sentence17: That is fine, I've got you booked with a white Tesla. Sentence18: Yes, the college is located on trinity street, postcode cb21ta. Is there anything else I can help you with today? Sentence19: I also need to book a taxi from the College to the restaurant. Sentence20: No I will take care of that. Please provide the phone number, address, and postcode for the restaurant Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System