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 for 6. and I'll need the reference number. Sentence2: That seems to be everything. Thank you for your help. Sentence3: There are 11 british restaurants to choose from. Is there a particular area you're interested in? Sentence4: I am headed to Stevenage. I cannot get on the train until 14:45. Sentence5: I want a train that leaves from Cambridge on Monday. Sentence6: Thanks. Can you look for a restaurant that serves british food. It sounds good. Sentence7: You are booked and your reference number is 4AEEDA4Z . May I help you wirh anything else today? Sentence8: I can do that but just need a date and time in order to book. When would you like to go? Sentence9: There are 5 options available. Is there a time that you would like to arrive by? Sentence10: Perfect. Have a great day. Goodbye. Sentence11: There are quite a few options available to you. Is there a specific destination you are looking for? Sentence12: Monday at 11:45 please. Sentence13: I would recommend The Copper Kettle located in the city centre. I can book that for you now if you'd like Sentence14: Yes, please. That would help me a lot. I would need to book a table at the one you recommend. Sentence15: I was able to book TR2045, reference number is 7OWLTI02 . Sentence16: No, the first train leaving after 14:45 would be fine. I want to book tickets for 8 people. Sentence17: We have 5 places listed that would meet your needs. Would you like me to recommend one for you? Sentence18: No certain area, but I'd like one in a moderate price range please. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System