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: Have a wonderful trip. Sentence2: Is there anything else I may do for you right now? Sentence3: There are 6 results. Is there a certain area you'd like? Sentence4: Fantastic, how many people do you need tickets for? Sentence5: Thank you again, good day to you. Sentence6: Absolutely. Your reference number is NS4A5CJT . Your table will be reserved for 15 minutes. Anything else I can help you with? Sentence7: What is the ticket price? Sentence8: Yes, I require the booking, as well as the reference number emailed or faxed to me. Sentence9: I need to find an expensive british place to dine. Sentence10: I don't think I want to book it just yet, I am still getting a head count. Sentence11: I'm heading to Cambridge, I would like to make it to London Liverpool Street by 8:00 if possible. Sentence12: The fare is 16.60 pounds. Need a booking? Sentence13: TR7020 departs Liverpool Street at 05:39, arriving in Cambridge at 07:07. Would you like a ticket? Sentence14: Sure- where are you traveling to? Sentence15: Could you please provide me with the reference number for the reservation? Sentence16: I look forward to my visit. Thanks, again. Sentence17: 6 british restaurants, wow! I need a table for 2 at 12:00 on wednesday. No particular area Sentence18: I need a train too. I will be leaving from London Liverpool Street, can you help with that? Sentence19: I have booked a table for you at Graffiti on the west side of town. They are located at Hotel Felix Whitehouse Lane Huntingdon Road and phone number 01223277977. Sentence20: That was all that I needed thanks. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System