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, that stay is available. I have successfully reserved it for you with a reference number of 34Z6Y56Y . Sentence2: Hi there. I was wondering if you could provide some information on the Bridge Guest House hotel. Sentence3: You are very much welcome. Thank you for using our service and have a good day! Sentence4: Thank You. I also need a train from Cambridge on Wednesday. Sentence5: I would like the one that arrives at 8:10. Could you book it for 6 people? Sentence6: You're all set! The reference number is BGNTQZRJ, and you can pay the total fee of 76.8 GBP at the station. Is there anything else I can assist you with today? Sentence7: Sounds good. Could you book me a room for 5 nights, starting Sunday? There will be six of us. Sentence8: I need to arrive in Stevenage by 09:45 on wednesday Sentence9: I'm sorry, Monday is not available either. Would you like to try a shorter stay, perhaps? Sentence10: Would 3 nights starting Sunday work? Sentence11: It is a guesthouse located in the south part of town in the moderate price range and has a 3 star rating. Sentence12: I'm afraid it's not available for that period. You would like to try a different day? Or a shorter time period? Sentence13: The TR8974 arrives closest to that time, at 08:10. Your other choice arrives 2 hours earlier. Sentence14: Is it available on Monday? Sentence15: Sure, I need further information to narrow the results though. Sentence16: Nothing else. Thank you for your help Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System