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: Thanks for all of your help, you've been great! Sentence2: I'm so sorry but the only expensive Portuguese restaurants in Cambridge are in the south or the north. Can I interest you in one of those? Sentence3: Booked. The table will be reserved for 15 minutes. Reference number: 5I58PIAF . Sentence4: There are nine Indian restaurants located in the centre. Do you prefer the cheap or expensive price range? Sentence5: Lovely, I would like to book it for 3 people for 3 nights starting Wednesday please. Sentence6: I'd still prefer to keep it in the expensive price range if possible Sentence7: Yes, that is correct, I also need a reference number. Sentence8: No, I would like it to be in the centre. Are there any Indian Restaurants? Sentence9: I'm looking for a hotel called kirkwood house Sentence10: I need a ride to and from too please. I'll need the car type and contact number too please. Sentence11: It's my pleasure! Have a wonderful time! Sentence12: Good day! The kirkwood house is a guesthouse type hotel in the northern area located at 172 Chesterton Road and can be reached at the telephone number 01223306283. Sentence13: I have you booked, it is a red skoda, and their contact number is 07654958817 any other questions? Sentence14: No. I am interested in a booking for the same number of people on the same day at 16:00. Three people on Wednesday. Sentence15: I am looking for an expensive Portuguese restaurant. Sentence16: I just need to verify you want reservations for Curry Garden on Wednesday at 16:00 for 3. Is this correct? Sentence17: The Curry Garden is an restaurant that serves Indian food and is expensive. Do you need more information? Sentence18: Your booking was successful. The reference number is : HOGURFVC . Is there anything I can do to assist you? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System