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: What is the name of the hotel you are staying at ? Sentence2: Thank you so much, you've been very helpful. Sentence3: can i request a taxi from my hotel to the city center Chinese restaurant? Sentence4: I would love a reservation for Sunday for 2 people at 18:00. Sentence5: Yes, I would also like to book a table at maharajah tandoori restaurant. Sentence6: Yes, please. I need the address and postcode of the one you recommend. Sentence7: Erm, nevermind, I need a nightclub in the centre of town. Sentence8: You're welcome. Have a great day! Sentence9: My pleasure, when would you like to dine at the maharajah tandoori restaurant? Sentence10: Booking was successful. The table will be reserved for 15 minutes. Reference number is : A5YKASS8 . Sentence11: There are five nightclubs in the centre of town: Ballare, Club Salsa, Kambar, Soul Tree Nightclub, and The Fez Club. Do you want to know more about any of them? Sentence12: Club Salsa is definately the place to be. It is located at 1 station road, postcode: cb12jb. Is there anything else I can help with? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System