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: No, that's all I needed. Have a nice day. Sentence2: I have 5 hotels that meet that criteria. What area of the city would you like to stay in? Sentence3: I'm afraid not. Perhaps a different star rating? Sentence4: OK, can you book me for 1 person for 5 nights starting on sunday? Sentence5: Do you care whether it is in the same area or not? Sentence6: I'm sorry there are no hotel that are moderate in the Centre of the city. Would you like a different part of town? Sentence7: No. Are there any guest houses in that range? Sentence8: Please book a different hotel in the same price range. Sentence9: I'm looking for a 3 star lodging with free parking. Sentence10: I'm sorry. Could you just find me one with free parking, a 3 star, moderate. I don't care where it is located. Sentence11: I think I would like it near the centre. Does it have free parking? I would like the price range to be cheap but at least a 3 star hotel. Sentence12: Enjoy your stay at the hamilton lodge. Have a great day. Sentence13: I have you booked at Hamilton Lodge. The reference number is TGSVA9OC . Is there anything else I can help you with? Sentence14: No, the area is not important. Just the same price range, if you can find anything. Sentence15: There are 3 including bridge guest house. Sentence16: What hotels are available in the moderate price range? Sentence17: I have a listing for gonville hotel but it is expensive, I have looked in other areas and the cheapest are moderate. Sentence18: Booking was unsuccessful. Want to find another hotel? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System