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 also need to find a train departing from Cambridge. Sentence2: Yes, it is an indian restaurant in the west. Would you like to book a reservation? Sentence3: Your booking is successful. The reference number is TOD8XYZB . Is there anything else I can help you with? Sentence4: Yes, please book for seven and I would like a reference number, please. Sentence5: Yes, I would like to book a table for 7 people at 18:00 on Monday. Can you please be sure to give me the reference number? Sentence6: We would like to go to leicester on tuesday. Sentence7: Of course. What time would you like to travel? Sentence8: I have train TR7692 leaving at 12:21 and arriving at 14:06. Would that be something that would work for you? Sentence9: You're welcome, have a lovely trip! Sentence10: I have multiple trains leaving from Cambridge. What would you like the destination to be so I can narrow it down? Sentence11: We would need the train to leaver after 11:45. Sentence12: Thank you that was all Sentence13: You're all booked. The total fee is 264.59 GBP and your reference number is HC7OJ4LI Sentence14: Is there a restaurant called Cocum? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System