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: Ballare is a nightclub located on heidelberg gardens, lion yard, cb23na. The entrance fee is 5 pounds. Is there anything else I can help you with? Sentence2: Thank you that's all I needed today. Sentence3: Actually, could you book a table for 6 people on Wednesday? Sentence4: No thank you, I don't need the address. I would also like to find a place to eat on the east side that serves British food. Sentence5: My pleasure. Enjoy your stay. Sentence6: For what time? Sentence7: I would like to book for 11:15. Sentence8: I have booked this for Wednesday for 6 people at 11:15. They will hold your table for up to 15 minutes. The reference number is: CGM6GIAJ Sentence9: The phone number for ballare is 01223364222, and the entrance fee is 5 pounds. Do you also need the address? Sentence10: I have one such restaurant and it is called the Grafton Hotel Restaurant and is in the expensive price range. Would you like their address? Sentence11: Can you tell me more about a particular attraction called the ballare? Sentence12: What is their phone number? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System