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: Are you looking to stay in a certain area of town? Sentence2: Can I get a taxi from the attraction to Rosa's B&B by 02:30? Sentence3: It's been my pleasure. Have a wonderful evening. Goodbye. Sentence4: Do you know the name of the attraction? Sentence5: Alright, you're booked! The car will be a yellow Lexus, and the contact number is 07345849347. Is there anything else you need today? Sentence6: Sure, it's located in the east and is on cherry hinton hall, cherry hinton road. The postcode is cb18dw. It's also free admission. Sentence7: Yeah I'd like to stay in the south. Sentence8: should have a star of 4. Sentence9: rosa's bed and breakfast is in the south and it's a 4 star hotel. Should I book it? Sentence10: Yes. Book for 3 people for 2 nights starting on Sunday. Sentence11: I would like information about Cherry Hinton Water Play, please. Sentence12: I am planning a trip and need information on a particular attraction. Sentence13: i also need a place to stay Sentence14: Do you have a price range or preferred star rating? Sentence15: No, that's it. Thank you. You've been a great help today. Sentence16: Your booking was successful. Your reference number is 10GCABIO . Is there anything else I can help you with? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User