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: It is a museum located in the centre. Admission is free. Sentence2: What is the address? Sentence3: Your reference number is WFZTQIKD . Sentence4: I have booked your taxi. You'll be expecting a grey lexus. The contact number is 07863326057. Sentence5: williams art and antiques is located at gwydir street, no. 5 dale's brewery Sentence6: I would like to find a place called Williams Art and Antiques. Sentence7: Thank you. Can you also tell me about a restaurant called riverside brasserie? Sentence8: I would like you to book for 8 people on 14:30 on sunday Sentence9: The Riverside Brasserie serves modern european cuisine in the Centre area of town, it is moderately priced. I would be happy to give you more information or book a table? Sentence10: Thank you. I'll also need a taxi to go from Williams Art and Antiques to the restaurant. I need to be there by 14:30. Sentence11: I certainly can. That's a museum in the centre, with free admission. Sentence12: Thank you, goodbye, have a nice day Sentence13: Can you get me information on a placed called williams art and antiques? Sentence14: Enjoy your trip! Thanks for booking through us. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User