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: No, thank you. I'm all set! Sentence2: Thank you and enjoy your stay! Sentence3: Yes I do! The hotel is located at 15-17 norman way, coldhams business park and the phone number is 01223866800. Would you like for me to book you a room? Sentence4: Ah yes. That worked. I have a booking for 3 people for one night. Your reference number is SERCRCLN . Is there anything else I can do for you? Sentence5: Yes, it's a museum in the city centre. Sentence6: Yes, please I would like a taxi to get me from the museum by 9:45 to my hotel. Sentence7: Can you try 1 night instead? Sentence8: I reserved a Blue Ford to pick you up at 9:45. The contact number is 07985144147. Is there anything else I can help you with? Sentence9: Yes, I would like to book the room for 3 people and 3 nights starting on Wednesday. Sentence10: I'm sorry, I was unable to book for that day. Would you like to try for another day or search for another hotel? Sentence11: I'd like the phone number and postcode for the museum. Sentence12: Phone number is 01223307402 and the postcode is cb23bj. Is there anything else I can help with? Sentence13: I'm looking for a hotel named Express by Holiday Inn Cambridge. Do you have any information on that? Sentence14: Sure, Is there an attraction called Castle Galleries? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User