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: Sure we have quite a few. Do you have a price range or area in mind? Sentence2: Hi there. I am hoping you could help me find a british restaurant in town. Sentence3: Yes I am looking for something moderately priced. Sentence4: Yes, the one in the west please. Sentence5: I have you booked at a British place in the center of town. Restaurant One Seven, reference code 5K83E181 . Sentence6: No, unfortunately. Both an hour earlier and an hour later, they're booked. Sentence7: Yes, I would really appreciate that. Can you get me a table for 5 on Sunday at 16:45? Sentence8: Okay, and do you prefer a certain area of town? There are four in the centre and one in the west. Sentence9: I'm afraid they're fully booked for 16:45 Sunday. Perhaps a different time or day? Sentence10: The one in the west is Saint Johns Chop House. Its located at 21-24 Northampton Street. Can I make a reservation for you? Sentence11: What is available in the centre area at 16:45 for a party of 5? Sentence12: Thank you, that is all I need. Bye. Sentence13: Have a great day! Sentence14: Let's try a different restaurant. Sentence15: Is there anything an hour earlier or an hour later on that same day? Sentence16: Sure, when you find something, make the booking and give me the reference number. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System