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: The only one is the Abbey Pool & Astroturf Pitch. Unfortunately, I do not have information on the entrance fee. I can give you their number if you like. Sentence2: Booking was successful. Your reference number is 8E863IRU . Can I help you with something else? Sentence3: Yes, can you book that for 6 people staying 3 nights starting Wednesday? I will need the reference number as well please. Sentence4: No, that should be all. I appreciate your help! Sentence5: Happy to help! Enjoy your stay! Sentence6: I found 5 expensive hotels with free internet and parking. Huntington Marriott hotel is in the west part of town. Would you like me to book a room there? Sentence7: There are many hotels that offer both. Which area of town are you interested in and what is your price range? Sentence8: You're welcome! Is there anything else that I can help you with today? Sentence9: Are there any places to book rooms that have both free wifi and free parking, or is it more of a one or the other thing? Sentence10: I am looking for an expensive hotel and have no preference about location. Sentence11: That's okay. Thank you for your help. Sentence12: I am looking for a swimmoingpool in the east. Can you tell me what is available and if they have an entrance fee, please? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User