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: Could you please give me the hotel phone number? I also need to know what type of hotel it is and the area it is in. Sentence2: I would prefer one with free wifi included. Do either of the hotels offer free wifi? Sentence3: OK, great, I'm glad I was able to help you out! Sentence4: Of course, the Gonville Hotel is a hotel in the centre area and the phone number is 01223366611, would you like any more information or to book a room? Sentence5: what kind of hotel is it? Can I have their number? Sentence6: Does the hotel have a restaurant attached to it? Sentence7: I do not have that information available. Would you like me to call them and ask? Sentence8: is there any restaurant close to the Gonville Hotel? Sentence9: That's all I need for now. Sentence10: The Gonville hotel is an expensive 3 star hotel and offers internet. Sentence11: Is there anything else I can do for you? Sentence12: I also need a very expensive hotel with 3 stars can you help me find one? Sentence13: Yes, I can help with that, La Margherita is in the west of Cambridge, located at 15 Magdalene Street City Centre, would you like me to make a reservation for you? Sentence14: The Gonville is in the Centre and La Margherita is in the west. Are you wanting to dine somewhere else? Sentence15: There is 1 in the center and 1 in the south. Which do you prefer? Sentence16: The Gonville is a standard hotel. Their contact number is 01223366611. Sentence17: Could you help me find a restaurant in the Cambridge area called La Margherita? Sentence18: Your table has been booked for 18:30 and your reference number is: 5KN7WD73 . Is there anything else I can help you with? Sentence19: Yes, can you make a reservation on thursday at 19:30 for 4 people? Sentence20: I'm sorry that time and and day is not available at La Margherita, would you like to try an alternative day or time? Sentence21: How about 18:30 then? Sentence22: No thank you. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User