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: There are many colleges and museums in the west part of the city, what type of attraction are you interested in? Sentence2: I would also like to find a great place to visit that is located near the hotel. Do you have any recommendations? Sentence3: Is that on the west side of town? I like the 4-star guesthouse idea, but I need it to be moderately-priced and on the west side. Sentence4: Doesn't matter. As long as I receive the address and post code as well. Sentence5: Okay. Your booking was successful. The reference number is OAOWJ7FF . Can I help you with anything else today? Sentence6: I have nothing on the west side can I check another area? Sentence7: I would suggest Magdalene College. It is located on Magdalene Street and the post code is cb30ag. Sentence8: Hmm. I think I should stay on the west, is there maybe a cheap option available instead? Sentence9: Okay, thank you. That's all I need. Sentence10: The finches bed and breakfast is a cheap option in this area. Sentence11: Awesome. Now please book me a taxi to go from Magdalene college to the hotel. I want to leave the college by 03:45 Sentence12: I'm looking for a place to stay, can you book that? Sentence13: You're welcome! Enjoy your time in cambridge! Sentence14: okay sold! book it for 5 nights for 2 on tuesday, and I need the ref # too please Sentence15: A grey skoda will pick you up at Magdalene College at 03:45 to take you to Finches Bed and Breakfast. The driver's contact number is 07909322670. Sentence16: Can you tell me more details? Allenball is a 4 star guesthouse for a great price. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User