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: Looking for something in the North, cheap price range please. Don't care much about internet. Sentence2: Your booking was successful. Your reference number is G7TDBIJU . Sentence3: Thank you that will be all I need. Sentence4: Can you book the worth house for 5 nights starting saturday for 7 people. Sentence5: I need a train to stansted airport from cambridge please. Sentence6: Okay, have a nice day! Bye! Sentence7: Ok, what day will you be traveling? Sentence8: There are two guesthouses that meet your criteria. The City Centre North B and B, and the Worth House. Would you like me to book one of those for you? Sentence9: What part of town would you prefer? And, do you need internet? Sentence10: I have booked the Worth House for you. The reference number is G7TDBIJU . Is there anything else I can help you with? Sentence11: I need to find me a room as well. Sentence12: The closest to thing I can find is a train leaving at 5:40 on Thursday. It arrives at Stansted Airport at 6:08. Is this okay? Sentence13: Does the Worth House have a star rating of 4? Sentence14: Yes, that works. Can I get the train id number and the price please? Sentence15: Sure, Saturday for 5 nights and 7 people. Sentence16: Thursday. I need to arrive by 12:45. Sentence17: the train Number is TR7966, it will cost you 10.10 pounds. Sentence18: Yes, the Worth House has a 4 star rating. Is there anything else I can help you with? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System