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: You are booked, the reference number is H1UWXXBY, are there any further questions? Sentence2: Trains leave birmingham new street every hours starting at 05:40. Is there a particular time you'd like to arrive? Sentence3: Hello can you help me find a place to stay, such as a hotel? Also it needs to be at a reasonable price with free parking. Sentence4: How long is the train trip? I just need to arrive by 19:45 Sentence5: The train ride is 163 minutes, I can book you on the TR4631 which leaves at 16:40 and arrives at 19:23. Sentence6: Ok, the ashley hotel is in the north with a moderate price range. Two stars. Would you like me to book you rooms? Sentence7: I would recommend the autumn house, a 4 star guesthouse in the east. Would you be interested in booking a room? Sentence8: It is actually in the cheap price range. Would you like something in the moderate price range instead? Sentence9: Have a nice day. Sentence10: The first train leaves at 5:40, is that too early? Sentence11: Is that in the moderate price range? Sentence12: Thank you. I am also looking for a train leaving on Tuesday. I will be departing Birmingham New Street for Cambridge. Sentence13: Do any of the options have two stars? Sentence14: Any star is fine. Sentence15: Yes, I can help with that! There are guesthouses and one hotel available with the amenities that you require. What area would you like to stay in? Sentence16: I have made those reservations and your reference number is D3EMA14P Sentence17: That will be all, thanks for your help. Sentence18: Yes I need to arrive by 19:45. Sentence19: Sure. Please book it for 5 people and provide me the reference number. Sentence20: Sure it'll be for 5 people for 4 nights starting on tuesday. Sentence21: Yes please. I actually do need a 2 star rating too. Sentence22: Unfortunately none of the options has two stars, would you like to change the search criteria? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System