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: Booking was successful! Your reference number is ZXKNH4XD . Is there anything else I can do for you? Sentence2: Your taxi is booked from cityroomz to jinling noodle bar for arrival at your 16:00 reservation. Your taxi is a red Honda. The contact number is 07715873440. Anything else? Sentence3: Great, we need that booked as well starting monday for 5 nights. Sentence4: Your table for 3 has been reserved on Monday at 16:00 at Jinling Noodle Bar. Your reference number is 3UL0PL4Q . Can I help with anything else today? Sentence5: How about Chinese food? Sentence6: I have one listing for cityroomz in the centre of town. Sentence7: Thank you for contacting us and have a nice day. Sentence8: I also need a taxi. Sentence9: No you have been great! Thank you for all your help. Sentence10: I've got many here that match that description. Would you like a specific food type? Maybe British food? Sentence11: Great. i also need to find a place to stay in the same price range as the restaurant and I am looking for a hotel. Sentence12: Yes, please, so moderately priced hotel in the centre. Sentence13: Will there be three people for the hotel reservation as well? Sentence14: That sounds great! Can you see if there's a table for 3 available at 16:00 on Monday? Sentence15: jinling noodle bar is a chinese restaurant in the centre, 11 Peas Hill City Centre Sentence16: Yes, I need a booking for 3 people. Sentence17: Would you also like that in the same area as the restaurant? Sentence18: I'm looking for a moderate priced place to dine in the centre of town Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System