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, please make reservations. Sentence2: Your reference number is : MUBTUUTM . Can I help with anything else? Sentence3: I have a train TR4068 leaving at 5:35 and arriving at 5:52. Would you like to make reservations? Sentence4: yes please, for 5 people at 20:15 on Thursday. Sentence5: The best time matching your criteria is a departure from Ely at 11:35. Will that do? Sentence6: Yes, there are quite a few. Is there a day and time you would like to travel? Sentence7: I would like to find a cheap mediterranean restaurant in the centre Sentence8: Did you book for 5 people? Is there a train that arrives closer to but before 14:45? Thanks. Sentence9: There is one matching result. It is the gardenia. Do you want me to book something there? Sentence10: I'm looking for a train from Ely to Cambridge. Do you have any? Sentence11: I'm sorry, my travel day is actually Thursday, not Sunday. I need to arrive by 14:45. Sentence12: Thank you for using our services. Sentence13: Yes, leaving on Sunday at 10:00 AM Sentence14: Thank you that will be all. Sentence15: Booking was successful, the total fee is 22 GBP payable at the station . Reference number is : IPO23Y22 . Is there anything else I can help you with? Sentence16: yes with reference number Sentence17: I apologize about that. The closest I can get you there is on train TR4992 which will arrive at 13:52. Would you like me to book it for 5 people? Sentence18: Booking was successful. The table will be reserved for 15 minutes. Reference number is : HWJS11KB . Is there anything else I can assist you with? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User