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 can help you with that. Where are you leaving from and going to? Sentence2: There are 15 restaurants in the city centre that are in the cheap price range. What type of cuisine would you prefer? Sentence3: Great! Enjoy your visit and have a good one. Sentence4: That doesn't matter. The 18:16 will do. Book it for 4. Sentence5: Thank you so much for your help, that's all I need today. Sentence6: I'm looking for a restaurant in the center, but on the cheaper price range, can you help me? Sentence7: Actually, no booking is necessary. But, can you suggest one and provide me the address. Thanks. Sentence8: I'm leaving from Norwich and heading for Cambridge. Sentence9: Your ticket booking was successful and the total fee is 70.4 GBP payable at the station . Your reference number is : 72SA1578 . Is there anything else I can help you with? Sentence10: Trains leave hourly from 5:16 am till 18:16 pm. The 18:16 pm train arrives at 19:35. The fare is 17.60. What time would you like to leave? Sentence11: Great thank you, I also need a train to arrive by 20:15 and traveling on monday. Sentence12: I recommend the golden house. The address is 12 Lensfield Road City Centre. Sentence13: I have three. Shall I try to book one? Sentence14: I will prefer restaurant that serve Chinese food. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User