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: Do you have a preference of star rating? Sentence2: What price range are you looking for? Sentence3: Could you make a reservation for 7 people for Friday at 11:45, please? I appreciate it. Sentence4: Moderate pricing and I dont care where they charge for parking or not. Sentence5: Sure, the address is 5 mowbray road. Is there anything else I can help you with? Sentence6: Fantastic thats everything thanks! Sentence7: Your reservation for 7 at Pizza express Fen Ditton this Friday at 11:45 was successful. The table will be reserved for 15 minutes. Your Reference number is : E5ZUIWJS . Sentence8: I do happen to have one place that would fit your needs. It's the Aylesbray Lodge guest house. They have free parking and internet. Can I book a stay for you? Sentence9: I need to find a place to stay tonight in the South please. Sentence10: I'm also looking for information on pizza express Fen Ditton. Sentence11: please contact us again in the future. goodbye. Sentence12: Sure. Pizza Express Fen Ditton is a great italian restaurant in the centre of town. What information do you need? Sentence13: Not at this time. Could I get the address for the Hotel? Sentence14: Yes, four star please. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User