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 have one that leaves at 12:40 and arrives at 13:08 on Sunday. Would like me to book this? Sentence2: Glad I could help and goodbye Sentence3: I am also looking for a train leaving Cambridge arriving by 13:45 at standsted airport. Sentence4: Thank you very much. That's it now. Bye Sentence5: The train on Friday leaves at 9:40 from Cambridge to Stansted Airport. It's a 28 minute trip at 10.10 pounds. Would you like me to book this? Sentence6: I have yu garden located in the east and is expensive. Would you like to make reservations? Sentence7: Okay the booking was successful. The reference number is RQLJFIDQ . Sentence8: I'm so sorry, there is nothing like that either. Sentence9: Let us know if you need help anytime soon. Have a great day. Sentence10: Can you please find a train that leaves on Sunday from Cabridge and goes to stansted airport. Sentence11: Ok can we try to find a expensive Singaporean restaurant in the east? Sentence12: Not at this time. But thank you for the informtion. Sentence13: I would like a mexican restaurant in west. Sentence14: Unfortunately there are no mexican restaurants in the west. Would you look to try a different area? Sentence15: Yes that would be fine I need reservation sfor 5 people at 16:45 on saturday. Sentence16: That would be great! Can you book 5 tickets on the 13:08 arrival train please? And then I'll need the reference number Sentence17: Sure. It will cost you 40.4 GPB. Your reference number is WB1JNS4M . Sentence18: Ok. What about Chinese? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System