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: Yes that would be great, thank you. Sentence2: yes its cb13ef can I help you with anything else ? Sentence3: I need it booked for 3 people for 5 nights starting Saturday. Sentence4: When would you like your booking for? Sentence5: Yes, I'd like to stay in the East part of town. I prefer something expensive also. Sentence6: I would also like a place to go in the same area as the hotel. Sentence7: What is the postcode for the hotel? I would also like to visit a museum. Sentence8: I have the express by holiday inn cambridge. 15-17 norman way, coldhams buisness park. Would you like to book there? Sentence9: I need to find a hotel quick, can you make it happen? Sentence10: That technology museum sounds interesting. Do you have the postcode, please? Sentence11: What sort of place are you looking for? Sentence12: Definitely! Do you have an area or price range in mind? Sentence13: Your reservation has been made for 3 people, 5 days beginning Saturday. Your reference number is: UX99D4XR . Is there anything else I can help you with today? Sentence14: The hotel postcode is cb13lh. There are 4 museums in the area I recommend cambridge museum of technology. It cost 5 pounds but there are free art museums. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User