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 want a hotel close to Backstreet Bistro. Not too expensive. Sentence2: Unfortunately, I am unable to book at this time. Would you like the number? Sentence3: I want to find a nice, expensive place to dine in the centre. Sentence4: I want a place that serves astropub Sentence5: Yes book room for 2 starting Wednesday for 5 nights and get me reference number. Sentence6: Are there any expensive hotels in that area? Sentence7: Great, thank you. I'm good to go now. Bye! Sentence8: The booking system is back up, so I went ahead and completed the reservation for you at Cityroomz as requested. Your reference number is ORTE2F27 . Anything else? Sentence9: Yes, for 2 people at 11:45 on wednesday Sentence10: What area of town are you looking to stay and what price range are you looking for? Sentence11: Cityroomz is the only moderately priced hotel in the centre of town with free WiFi. Can i book a room for you? Sentence12: Backstreet Bistro is my favorite. They're located at 2 Sturton Street City Centre, cb12qa. Would you like to book a table there? Sentence13: Booking was successful. The table will be reserved for 15 minutes. Reference number is : WV7CR016 . Sentence14: i have 33 to choose from. what is your prefered type of food? Sentence15: The booking system is not working at this time. Sentence16: I'm glad we could help. Have a great day. Sentence17: Could you retry, only starting on Wednesday? Sentence18: Thanks. I'm also looking for a hotel with free wifi. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System