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 suggest the Castle Galleries in the city centre. There is no entrance fee. Sentence2: I need it for 4 people, we're staying 2 nights starting Thursday. Sentence3: I want to leave the attraction by 16:15. Please send me the contact number and car type. Thank you! Sentence4: I can certainly help you book a room. I will just need to know how many guests, how many days you are staying, and what day you plan to arrive. Sentence5: In what area? Sentence6: You're all set! The car will be a grey tesla and the contact number is 07137237413. Sentence7: I need information for the warkworth house for my hotel. Sentence8: Thank you! I'm also looking for a good museum to go to. Sentence9: Okay. Can you help me book a taxi to get to there from my hotel? Sentence10: You're all set! Your reference number is XM6Q1AUA . Sentence11: The Warkworth House is a guesthouse located on the east side of town in the moderate price range with a 4 star rating, free internet and parking. Anything else? Sentence12: Hi, I am traveling to Cambridge next month and am so excited to see some local tourist attractions. I do need help with a place to stay. Sentence13: Yes, can you book that for me and send me a reference number please? Sentence14: What area of town will you be staying in? Sentence15: Sure I can help you with that. What time do you want to leave or arrive by? Sentence16: Awesome! That is all I need for now, thank you! Sentence17: Glad I was able to help you today. Goodbye. Sentence18: It does not matter and please provide the entrance fee. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System