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: For what times. Sentence2: No thank you that will be all for me, goodbye. Sentence3: Book it for 30 min earlier. I need the reference number. Sentence4: Yes, the five of us would like to eat at 17:45 before we check in to the hotel. Sentence5: Yes I am looking for a restaurant called Frankie and Bennys Sentence6: The Avalon is a 4 star moderately priced guesthouse in the north with free internet. Would you like to book there? Sentence7: I need a taxi so that it arrives by the time of my reservation at the restaurant. Sentence8: Oh! I got you the table for your original time at 17:45. Your reference number is 6MIRFIR2 . Is there anything else I can help you with? Sentence9: That one is not open, shall I try a shorter stay? Sentence10: Yes can you book it for 5 people on Saturday? We need rooms for 4 nights. Sentence11: Can you tell me some info on the Avalon hotel? Sentence12: I also need to book a taxi from the restaurant to the hotel. Sentence13: Will you need any thing else now? Sentence14: Booking was successful. Reference number is : ZWN28J72 . Do you need anything else? Sentence15: I guess we could shorten it; can you try 2 nights instead? Sentence16: That sounds great. Thank you very much. Sentence17: I'm sorry, but I cannot get you in at that time. Is there another day or time slot that would work for you? Sentence18: Your taxi has been booked to take you from Avalon to Frankie and Benny's at 17:45. Your taxi will be a black tesla and the contact bumber is 07715682347. Sentence19: its in Cambridge Leisure Park Clifton Way Cherry Hinton. should i book for you a room? Sentence20: Thank you for contacting Cambridge TownInfo centre. I hope you have a pleasant trip! Goodbye! Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User