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: Please tell me where the restaurant HK Fusion is located. Thanks. Sentence2: Okay I recommend the Acorn Guest House. Sentence3: I just need the phone number for that place. Sentence4: Can I have the postcode, address, and phone number? Sentence5: The phone number is 01223355909. Sentence6: HK Fusion is at 21 Burleigh Street, City Centre. Would you like a reservation? Sentence7: Yes, the phone is 01223353888. Post code is cb41da and the address is 154 chesterton road. Is there anything else I can help you with? Sentence8: What time would you like lunch? Sentence9: great! i have eleven options for you! Sentence10: No, that would be all for today. Have a great evening. Sentence11: Great, I would like it to be a guesthouse and have 4 stars. Sentence12: please reserve for me table for two for today luch. thank you Sentence13: I also need a moderate priced place to stay in the North. Sentence14: Enjoy your stay. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System