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: Yes, please book a room for me. Sentence2: Sure, I can do that. When were you looking to stay? Sentence3: I'm looking for an hotel in the north. Sentence4: I need rooms for 5 people and 2 nights starting on Thursday. If you could make a reservation that would be great. Sentence5: There are 11 museums including cambridge contemporary art, museum of archaelogy and anthropology, and whipple museum of the history of science. Sentence6: Thank you for your time. Sentence7: I would like the phone number and entrance fee to the Whipple Museum. Sentence8: There are no entertainment type attractions in the centre, shall I look up another area or attraction type? Sentence9: You are all set! Your reference number for you booking is 8CAZN8ND . Is there anything else I can help you with? Sentence10: Yes, i am looking for entertainment attractions in the centre of town. Sentence11: Thank you for allowing me to help you. Have a great day. Sentence12: I have 2 hotels in the north both priced moderately the ashley hotel and the lovell lodge. Sentence13: The museum is reachable at 01223330906 and there is no charge for admission. Sentence14: Ok would you like me to book a room for you? Sentence15: The Ashley Hotel will work for me. Sentence16: How about a museum instead? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System