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: I am also looking for some where to go in the center of town. Sentence2: Did you have something in mind. We have lots of great things to do--colleges, museums, theatres, nightclubs, etc. Sentence3: On Thursday at 19:30 please. Sentence4: Okay great! Your car will be a grey bmw and the contact number is 07720582184. Sentence5: yes we have art galleries and anthropology and archaeology museums. Sentence6: I'm not sure. What types of museums are there? Sentence7: I'd like to get a taxi from the museum to the restaurant, to get there in time for my reservation. Sentence8: Six people will be dining. Sentence9: select one and give me its entrance fee, attraction type and phone number Sentence10: The restaurant is called the Cambridge Chop House. I would really like to make a reservation there. Sentence11: Your reservation has been made. The table will be reserved for 15 minutes. Your reference number is: KOOJ1Y7I . Is there anything else I can help you with? Sentence12: Great, how many people will be dining? Sentence13: the fitzwilliam museum is very popular. There is no entrance fee and their phone number is 01223332900. Is there anything else I can do for you today? Sentence14: Very good, thank you kindly, that will be all. You are dismissed. Sentence15: What day and time would you like to make the reservation? Sentence16: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence17: Do you know the name of the location? Sentence18: I have a particular restaurant that I need to find please. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System