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'll be happy to help- but I need to know what region your hotel is in first. Sentence2: It was my pleasure. Have a good evening. Sentence3: I have about 44 different attractions in the centre of town. Lots of architecture, colleges, boating, cinemas, concerthalls, museums, nightclubs, swimming pools, and theatres. What interests you? Sentence4: I have made that reservation for you. Your reference number is K7HFUCR6 . Is there anything else I can help you with? Sentence5: I have no food preference, but I would prefer an expensive restaurant. Sentence6: Great Saint Mary's Church is located in Market Square, cb23pq and the entrance fee is 2 pounds. Would you like a booking? Sentence7: I am also looking for an attraction in the same area I will eat. Sentence8: I'm in the centre of town. Sentence9: I like great saint mary's church. Need some info on it? Sentence10: We have a lot of restaurants available in the city centre. Do you prefer a certain type of food? Sentence11: Yes. Please book for 7 people on Thursday at 12:30. Sentence12: The Bedouin is an African restaurant that offers a high quality experience. Would you be interested? Sentence13: Hi there. Real quick. Having a blast. I want a REALLY good restaurant not too far from my hotel. What do you have? Sentence14: Can you recommend a place? Sentence15: No thank you that will be all Sentence16: Yes, how much is the entrance fee for st. mary's church? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System