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: Ok, can you give me the phone number and address please? Sentence2: No that's all, thanks! Sentence3: Yes, I was looking for a particular attraction, Saint Catharine's College. What area is it located in? Sentence4: You're welcome! Have a great day! Sentence5: There are 11 places that meet those critieria. Are you looking for a particular star rating? Sentence6: Can you book a room as well? Sentence7: Your rooms have been booked for Monday. The reference number is JJK77QKA . Is there anything else I can do for you? Sentence8: I would like to stay in the north I have a moderate price range. Sentence9: It is located in the centre. Admission is free. Sentence10: What price range and what area are you looking for? Sentence11: I would suggest acorn guest house. Sentence12: Yes, I would like something with a 4 star rating, and I would like for it to be a guesthouse. Sentence13: Yes, what day would you like? Sentence14: I'm looking for a place to stay during my upcoming trip to Cambridge. Sentence15: I would like it for 3 people and 3 nights starting on Monday please. Sentence16: saint catharine's college address is king's parade. Their phone number is 01223338300. Is there anything else I can do for you today? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User