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: Yes, can you get me the entrance fee please. Sentence2: What is the entrance fee? Sentence3: You can call them at 01223300085. What else can I do for you? Sentence4: Do you have a departing time or arriving time ? Sentence5: I need to leave cambridge after 9:45 on thursday. Sentence6: The entrance fee is not listed so i encourage you to call to inquiry about the fee. Sentence7: Can you help me get a train going to Bishops Stortford? Sentence8: I'm sorry, that information is not available to me. Sentence9: I'd recommend adc theatre. Would you like more information on it? Sentence10: That sounds good. I need it for 4 people on thursday, please. Sentence11: Yes, please. I'm looking for a theatre in the centre. Sentence12: Yes that would be great, thank you Sentence13: okay, the TR2929 leaves at 11:29 and arrives by 12:07. Would you like me to book tickets? Sentence14: Your booking was successful and your reference number is TGDYE9A4 . 40.40 GBP will be payable at the station. Can I do anything else for you? Sentence15: Is there a number I can call to get the entrance fee information? Sentence16: Yes I have several. Would you like me to recommend one to you? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User