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: No, that would be all. Thank you. Have a good day. Sentence2: Can you give me the phone number for Churchill? Sentence3: Of course! Ugly Duckling is an expensive Chinese restaurant in town center. Would you like a booking there? Sentence4: Certainly, churchill college the phone number is 01223336233. What else can I do for you today? Sentence5: Can you tell me what kind of food the Ugly Duckling offers and where it is located? I also need their phone number. Thank you. Sentence6: Thank you for all your help today. Sentence7: How about a college then? Sentence8: I am also looking for information about a restaurant called ugly duckling. Sentence9: The Ugly Duckling offers Chinese food. The address is 12 St. Johns Street City Centre. Their phone number is unavailable. Sentence10: There are 5 college's in the west area. There is Churchill, Clare, Clare Hall, Magdalene and Queens. Would you like me to book one today? Sentence11: Hi, I am looking for places in west Cambridge that feature architecture. Sentence12: I am sorry, I am unable to locate an attraction in your desired location? Sentence13: Thank you. Enjoy your stay. Sentence14: Is there anything else that I can assist you with today? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User