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 don't see anything with that criteria. Perhaps you would like a different cuisine? Sentence2: I have many trains meeting your request. What is your destination and preferred departure and arrival times? Sentence3: Actually, that's all I needed. Thank you for the help! Goodbye. Sentence4: Great! Have a great day. Sentence5: Can you look for chinese food? Sentence6: Thank you for your assistance. Sentence7: I found a chinese restaurant named tang chinese located at Napier Street City Centre would you like to reserve a table? Sentence8: Sorry there is no panasian food in any area. Would like me to find a different restaurant? Sentence9: The arrival time is 17:27. Price is 16.60 pounds. Duration is 88 minutes. Sentence10: Was there anything else I can do for you today? Sentence11: Okay, Booking was successful. The table will be reserved for 15 minutes. Reference number is : MCSWQ2W5 . Is there anything else I can help you with? Sentence12: I have a train TR 2815 leaving cambridge at 15:59 on wednesday and arriving at 17:27 at london liverpool street. Would you like to book this? Sentence13: Can you help me find an expensive Panasian restaurant, please? Sentence14: I also need to train leaving from cambridge on thursday. Sentence15: book a table for 6 people at 14:45 on tuesday. Sentence16: My destination is London Liverpool Street, departing on Wednesday from Cambridge after 14:15. Sentence17: No, could you give me the price, arrival time, and overall travel time, please? Sentence18: Are you sure there isn't any in the centre? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User