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: I have train TR7556 arriving at 18:08,is that okay? Sentence2: The restaurant should serve italian food and should be in the south. The restaurant should be in the expensive price range Sentence3: Absolutely! What type of cuisine are you interested in trying? Sentence4: Booking was successful. The table will be reserved for 15 minutes. Reference number is : UA39MMKX . You're all set. Is there anything else I can do for you? Sentence5: I will need that for eight people. Sentence6: No, thanks that's all goodbye Sentence7: Frankie and Bennys fits your criteria, shall I book you a table? Sentence8: Yes please, for the same group of people on the same day at 21:00. Sentence9: Great your booking was successful and your reference number is TESIIRJ1 . Sentence10: Thanks can you also help me find some food? Sentence11: I want to leave London Kings Cross on Monday and arrive by 18:15. Sentence12: There are many trains going to cambridge today. Where are you leaving from and what time do you want to depart or arrive? Sentence13: I need help booking a train to cambridge today. Sentence14: Thank you for calling and enjoy your dinner. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User