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: How about 9:45? Sentence2: I need to travel on Friday sometime after 13:45. Can you tell me whats available? Sentence3: I would like to book a train leaving Cambridge that goes to London Liverpool Street please. Sentence4: My apologies, there are none that serve Jamaican. Would you like to look for a different type of cuisine? Sentence5: I was unable to book for that timeslot. Can you give me another timeslot to work with? Sentence6: How about one that serves British food in the same area? Sentence7: I have found several, how about this one? The Oak Bistro, price rang is moderate, phone is 01223323361, post code cb21eg, 6 Lensfield Road. Sentence8: Great that's all the information I needed on the train. Sentence9: You are welcome. Enjoy your stay. Bye. Sentence10: Thank you. That's all I needed. Sentence11: Can you please book for 4 on Friday at 10:45? Sentence12: I have train TR4187 that leaves at 13:59 and arrives by 15:27 in london liverpool street. Would you like me to book that for you? Sentence13: There is a train which leaves every two hours between 5:59 and 13:59 that costs 16.60 pounds. The duration of the trip is 88 minutes. Sentence14: What about one in the centre? Sentence15: I also need to find a restaurant. Preferably one that serves Jamaican food. Can you find that for me? Sentence16: Excellent! Can I help you with anything else today? Sentence17: Your table is reserved. Reference number 66TP23A1 . Sentence18: Unfortunately there aren't any restaurants serving Jamaican food in the area, would you like to try another type of food? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System