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'm looking for a place to eat in Cambridge. I'd like to eat light bites in the mid price range please. Sentence2: Thank you that is all I need today. Have a great day. Sentence3: Sure, can you book that for me? Starting friday, 2 nights, and 5 people Sentence4: I apologize for the delay. The system is up and the booking was successful. Your reference number is GXCM3S30 . Sentence5: Okay, how about some Italian food? That sounds good, too. Sentence6: Is there a certain area you prefer? Sentence7: That is all that I need. Sentence8: We have several is there a specific area or price range you'd like me to look at? Sentence9: Okay, I am happy to have assisted! Goodbye! Sentence10: I want a 4 star place with the same price range as the restaurant. And free parking as well. Sentence11: I would like to find a room as well, with free wifi. Sentence12: How about Finches Bed and Breakfast? Sentence13: anywhere should be fine. find me the postcode, phone number and location please. Sentence14: Hmmm. Nothing is coming to mind for light bites in that price range. May I suggest something else for dining? Sentence15: You should try Prezzo it is located at 21-24 Northampton Road in the West, post code cb30ad and their number is 0179952160. Do you need more help today? Sentence16: I apologize, but our hotel booking system is currently down. Can I help you with something else? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System