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: There are 7 museums in the west part of town. All but one are free to enter. Do you have any further criteria? Sentence2: Thank you very much. That's all I'll need today! Sentence3: Your reference number for the restaurant reservation is QT2C8PNF . Can I help you with anything else? Sentence4: Yes, I would like reservations for four for seven o'clock tomorrow evening. Sentence5: Their phone number is 01223312112 Sentence6: Sure thing, may I have their phone number? Sentence7: It needs to be in the west. Sentence8: Could I get the reference number for that booking please. Sentence9: Actually can I get reservations for 7 at 20:00 on Friday? Sentence10: How about an expensive restaurant in the west serving European food? Sentence11: Yes, please. Do you have their phone number? Sentence12: I also need a seafood restaurant that is in that same area Sentence13: No problem. I have you booked on Friday at 20:00 for 7. Anything else I can help you with? Sentence14: Would you like to visit cafe jello gallery? It is in the west with free entrance. Sentence15: Sorry, looks like there are no restaurants in the area with those requirements. Sentence16: Ok then. Goodbye. Sentence17: Yes. I would like a taxi to take me to the restaurant by my reservation time. Sentence18: I'm sorry that booking was unsuccessful, would you like to try another time or another day? Sentence19: The Cambridge lodge restaurant fits all your criteria. Can I book a reservation for you? Sentence20: Can you tell me if there are any museums in the west part of town? Sentence21: Booking for your taxi was successful. The contact number is 07760432022 and the care will be a white volvo. Sentence22: Will you be heading to the restaurant directly from Cafe Jello Gallery? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User