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: Where will you be departing from? Sentence2: If I could leave on the first one after 16:30. that would be perfect. Sentence3: No problem, enjoy your stay in cambridge. Sentence4: I am looking for a place to stay in Cambridge. I prefer a cheap, 4 star hotel. Sentence5: The first one after 16:30 is the TR6477, leaving at 16:40. Would you like a ticket on this train? Sentence6: What day would you like to travel? Sentence7: Yes, I would like to book it for 5 people for 5 nights, beginning on Friday. Sentence8: Good news! Booking was successful, the total fee is 375.5 GBP payable at the station . Reference number is : K5EOIMR6 . Is there anything else? Sentence9: Does this place have free wifi? Sentence10: Sure. I would like 5 tickets, please. Sentence11: Yes, the cambridge belfry has internet. Would you like me to book it for you? Sentence12: On Friday, please. Sentence13: That will be all. Thank you! Sentence14: Yes, can you help me find a train into Cambridge? Sentence15: I have he cambridge belfry in the west area. It is cheap and has 4 stars. Would you like me to book that for you? Sentence16: We have several trains to cambridge the earliest leaves at 05:40 and the latest one leaves at 23:40. Do you have a specific time you would like to leave? Sentence17: You are booked and your reference number is CK82ZWXD . Can I help with anything else? Sentence18: I am departing from Birmingham New Street Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User