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: Do you have their address also? Sentence2: Ok my second choice was british food can you find a british restaurant? Sentence3: There are 5 museums in the centre of town. They are all free to visit. How about Broughton House Gallery? Sentence4: Can you find me a Greek restaurant in the centre of Cambridge? Sentence5: Okay you're all set. Your reference number is 3Y6H383S and the table will be reserved for 15 minutes. Is there anything else I can help you with? Sentence6: Thank you, I have all the information I need, goodbye. Sentence7: That sounds nice. Can you give me the phone number and address? Sentence8: I also want to find a museum to visit. Sentence9: Yes, please. It'll be for 2 people on Saturday at 12:00. Sentence10: The phone number to the museum is 01223314960. Sentence11: Of course, one of my favorites is Fitzbillies Restaurant at 51 Trumpington Street City Centre. May I book you a table? Sentence12: There are no greek restaurants in the centre, would you like me to look for greek restaurants elsewhere in the city? Sentence13: Thank you and enjoy your stay with us in Cambridge! Sentence14: The address is 98 king street, centre, cb11ln. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System