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 actually going to call the hotel before I make the reservation. I think you for your time. Have a nice day. Sentence2: No thanks. No need to book at this time. Can you tell me about a hotel called the Avalon? Sentence3: Sure. Can I get some more information? Where were you wanting to go to? Sentence4: I would be leaving Cambridge and heading to Peterborough on Tuesday. Sentence5: The Avalon is a 4 star guest house. The phone number is 01223353071. Would you like me to make a reservation for you today? Sentence6: Yes, I need to arrive in Peterborough by 13:45. How long is the train ride? Sentence7: You need to tell me how many people are staying at what days. Sentence8: Is there a specific time you would like to depart or arrive by? Sentence9: It is a moderately priced hotel on the north. Sentence10: Sounds great. How many stars it that? And can I have the phone number? Sentence11: The train ride is 50 minutes long. TR6310 leaves at 12:34 and arrives at 13:24. Would you like me to book you a ticket? Sentence12: Is there anything else I can help you with ? Sentence13: Hello, I am looking for information. Can you help me with a train? Sentence14: Yes please make the reservation. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User