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'm viviting Cambridge and would really love to do something while I am here on a boat. Are there any attractions like that? Sentence2: I would love more information, thanks! Sentence3: Either will do. Please book it for 2 people for 4 nights starting Tuesday. Sentence4: Do you have a price range in mind? Sentence5: There are four boat attractions to choose from. I recommend the Riverboat Georgina in the north. Would you like more information about it? Sentence6: Booking at thw Hamilton Lodge was successful. Your reference number is 3ZVBKBHN . Anything else? Sentence7: Thanks. I'll also need a place to stay on my visit. Could you find me a 3 star hotel nearby? Sentence8: Yes, I do. North, please., and I would like a guest house. Sentence9: There are two hotels fitting your requirements. Do you have a regional preference? Sentence10: No, I do not have a price range. Any price range will do. Sentence11: No that is all, thank you. Good bye. Sentence12: Well, the phone number is 01223902091 and the postcode is cb43ax. Sentence13: Okay, the alpha-milton guest house and hamilton lodge are both in the north, and both have a moderate price. Do you have a preference? Sentence14: You are welcome. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System