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: Alright, I have your restaurant booking. Your reference number is: DHDB0H4V . What are you looking for in a hotel, so I can narrow down the choices? Sentence2: I'd like it to be in Centre. Sentence3: We will be dining at 16:30. Please book a table for 3 on Saturday and provide the reference number. I also need a hotel in the same area. Sentence4: I've got two expensive hotels in the area. Both have internet and parking. university arms hotel has 4 stars. Does that meet your needs? Sentence5: Would you like me to book you a room? If so, i will need how many people and nights you will be staying and on what day. Sentence6: I also need a taxi between the hotel and the restaurant. Sentence7: Can you make me a reservation for Saturday please for 3 people? Sentence8: I will look a taxi up for you. Sentence9: Yes, that should be perfect thank you. Sentence10: What time would you like to dine on Saturday? Sentence11: Can I have the postcode and hotel type, please? Sentence12: it is the type of a hotel. its post code is cb21ad. anything else? Sentence13: The booking was successful I have a reference number and the hotel number for you. Sentence14: A grey toyota will be waiting to pick you up, if you have any further questions the contact number is 07137847685. Sentence15: No, that will be all. Thank you! Sentence16: I would suggest midsummer house restaurant it has great food. Sentence17: Anytime, were here to help. Have a good day! Sentence18: Thanks for all the help. Sentence19: Thanks so much! Sentence20: Can you assist me in finding me an Expensive Restaurant in Cambridge where I can dine? The restaurant should be serving British foods. Sentence21: sure, i have 6 options for you Sentence22: Thank you very much! Can you please make sure that it arrives at the restaurant by the time of my reservation? Sentence23: Thanks for using our service, good day! Sentence24: Can I help you with anything else today? Sentence25: Something in the same area as the restaurant. It should also be in that same price range. Sentence26: I would like a room for three people, just for Saturday night. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System