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: Booking was successful, the total fee is 24.64 GBP payable at the station .Reference number is : OKXUNQ4W Sentence2: I need help finding a cheap restaurant Sentence3: I would like to go to Ely please. Sentence4: I'm interested in European cuisine. Sentence5: Do you have a time you need to leave or arrive by? Sentence6: We have several options! Where would you like to go? Sentence7: Can you book me a table there for 7 on Friday at 19:45? Sentence8: We have the river bar steakhouse and grill in the centre area, would you like more information? Sentence9: The train should arrive by 13:00 and should depart from cambridge. Sentence10: I would like to leave in Saturday. Sentence11: Yes can you help me find a train as well? Sentence12: Thanks for the help, goodbye! Sentence13: Okay. Can you go ahead and book that train for 7 people please? And give me the reference number. Sentence14: You are welcome, enjoy your stay! Sentence15: What type of cuisine would you like? Sentence16: Sure! Where would you like to come from? What day of the week and what time? Sentence17: Yes. Your booking was successful. The table will be reserved for 15 minutes. Your reference number is ODB8T8HO . Is there anything else I can help with? Sentence18: Your best best is TR0721, leaving Cambridge at 11:50 and arriving Ely at 12:07. The trains only run every 2 hours on Saturdays. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System