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: ok thank you, lets book that one Sentence2: You're welcome, have a great day! Sentence3: Sure, I can help you with that. What section of town were you looking for? Sentence4: I would need seats for 5 people please. Sentence5: yes, it'll be for the same group of people. Sentence6: Same day tuesday, lets try for 16:45, get a little ahead of the dinner crowd. Sentence7: The area doesn't matter. Please recommend a good place if you could. I need a table booked for 5 people at 16:45 on Tuesday. Sentence8: For what day and time is the reservation for 5? Sentence9: Thank you. Can you also help me find a good Italian eatery? I'd like it to be moderately priced, please. Sentence10: I have you booked on TR2083 arriving in Cambridge at 10:07. It will cost 50.5 payable at the station. Reference EEBGS9FF . Sentence11: My all time favorite italian food place is Prezzo. It is located in the west. Would you like me to reserve you a table? Sentence12: Your reference number for your reservation is 7E1MPES0 and they will hold the table for 15 minutes. Is there anything else that I may assist you? Sentence13: I'm looking for a train that will depart from bishops stortford and that will arrive by 11:45. I'm looking forward to a good lunch in Cambridge! Sentence14: How many seats would you like to book on TR9178? Sentence15: There is a train everday that arrives at 10:07 Sentence16: That is all, thank you very much Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System