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: Your table is booked and is reserved for 15 minutes. Your reference number is I9AKFZC5 . Can I help you with anything else today? Sentence2: Is that one expensive? I would like an expensive, 4-star hotel. Sentence3: Okay there are many to choose from. Do you have a preference for the area you stay in? Sentence4: Alexander bed and breakfast is located in the centre which is close to the hotel. Would you like me to book you a reservation here? Sentence5: No. Thank you, you have been very helpful. Sentence6: I would like a table for 1 at 18:15 on Tuesday at the Bedouin, please. And may I have the reference number when it's booked? Sentence7: Thank you for your help. Sentence8: Thank you good bye. Sentence9: Okay, I've booked you for one person at University Arms, starting on Tuesday, for 4 days. Your reference number is HSVG3GT9 . Sentence10: No that is a cheap hotel but is rated 4 stars. How about the university arms hotel, its is 4 stars and expensive. Sentence11: How about near the restaurant? Sentence12: I'm happy to have assisted you. Is there anything else I can do for you today? Sentence13: What are some nice, expensive restaurants in the center of town? Sentence14: I would like to get the taxi to get me there by 18:15 please Sentence15: I was able to book a black ford phone number is 07618987553 Sentence16: I can do that, when would you like the taxi to pick you up? Sentence17: Sounds great! Please book a 4 night stay for 1 person on tuesday. Sentence18: The Bedouin, Kymmoy & Midsummer House Restaurants match your desired criteria, would you like me to book you a table? Sentence19: Yes I also need to book a taxi to take us between the hotel and the restaurant. I will need the car type and a contact number for the booking. Sentence20: Yes I need a hotel with free wi-fi. Sentence21: I am happy to help Sentence22: Goodbye and take care! We hope to see you again. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System