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: I have found University Arms Hotel on regent street with a 4 star rating and free parking and internet. Would you like to book? Sentence2: I need to book a hotel. I need it to be in the town center, and have a minimum star rating of 4. Sentence3: No that will be all. Sentence4: Alright. If you need anything else, feel free to ask. Have a wonderful trip. Sentence5: The booking was successful. Your reference number is 9NJXK7CF . Is there anything else I can help you with today? Sentence6: I'm sorry, the booking was unsuccessful. Would you like to try to stay for a short period or start on a different day? Sentence7: I'd like to find a korean restaurant in the same area as that hotel. Sentence8: Yes, please book that one. It will need to be for 3 people, and we'll be staying for 5 nights, beginning on Sunday. Sentence9: Would you prefer a guesthouse or a hotel proper? Sentence10: Booking was successful. Reference number is : D09887CW . Is there anything else I can do for you today? Sentence11: What time would you like the reservation? Sentence12: I would like it booked for the same day at 14:15. Can I get a reference number too? Sentence13: Yes please book it for 3 people sunday. Sentence14: Alright, what about only for 3 nights then. I can do 3, book it and give me the reference number please. Sentence15: There's a restaurant called Little Seoul. It's expensive, but also on Regent Street. Would that work? Sentence16: It should be a hotel type with free parking. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User