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'm looking for a gastropub food restaurant in the centre of Cambridge please. Sentence2: I also need a taxi to get me between the two places. Sentence3: OK, I was able to book you at the Acorn Guest House. Your reference number is YBGSWXEJ . Can I help you with anything else? Sentence4: You are welcome, enjoy your stay! Sentence5: Nah, I'll get that later. Can you book a table there, though? 3 people on Sunday at 15:30. Sentence6: The reference number for you dinner reservation is 7E3EL1IG . What area of town would you like to stay in? Sentence7: My favorite is The Slug and Lettuce. It is expensive though. Can I get you an address for it? Sentence8: Could you please do that? Sentence9: I just need to find a hotel for Sunday for 3 people. The stay should be two nights. Please give me the reference number too. Sentence10: Which place will you be leaving from? Sentence11: Yes I can, I have booked a table for 3 people for Sunday at 15:30 at the Slug and Lettuce. Can I help you with anything else? Sentence12: I don't really have a price range in mind. What's your favorite place? Sentence13: You are set, look for a red tesla, their contact number is 07587955465, any further questions today? Sentence14: Yes, I also need a place to stay with free parking. Sentence15: I want to make sure it gets me to the restaurant for the reservation from the hotel. Sentence16: Sure what price range are you looking for? Sentence17: Sure thing. I can work on getting that booked for you. Sentence18: That is great. Thank you for your help. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User