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 would be all. Thank you. Have a good day. Sentence2: Hi there, I'm looking for a middle-range hotel located in the south of Cambridge. Sentence3: You have a good day as well. Goodbye. Sentence4: There are two hotels that meet your criteria, aylesbray lodge which is a 4 star hotel, and bridge guest house which is 3 star, would you like more information on one? Sentence5: The postcode of the Aylesbray Lodge Guest House is cb17sr. Sentence6: Thank you again for using our service. Sentence7: What is the postcode of aylesbray lodge? Sentence8: I have successfully booked your table for 5 at 18:15 on Friday. Your reference number is RXC5FU89 . Anything else I can help you with? Sentence9: Yes. Can you book that for 5 people at 18:15 on Friday? Sentence10: There is one I know of. Ali Baba in the centre. It is a moderately priced lebanese place. Does that work? Sentence11: Yes please. Is any of these two a guesthouse type of hotel? Sentence12: there is the aylesbray lodge guest house and the bridge guest house, both meet your requirements. Sentence13: You're welcome. thank you for using our service. Have a good day. Sentence14: Great, thanks. Can you also help me find a lebanese restaurant? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System