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 if you can tell me where you will leaving from and what day and time? Sentence2: Thank you! Can you help me find a train to Norwich, please? Sentence3: Great. I'll call back if I need anything. Goodbye. Sentence4: No. I think that is all. Sentence5: It is a cheap Indian restaurant. Would you like to book a table? Sentence6: My pleasure. Have a great day. Goodbye. Sentence7: what kind of food do they serve and how expensive is it? Sentence8: I need the train to arrive by 21:00. Is there one at that time? Sentence9: I am now looking to dine at mahal of cambridge Sentence10: I am planning a trip in Cambridge Sentence11: Booking was successful, the total fee is 52.8 GBP payable at the station .Reference number is : 8L54O12B . Sentence12: No worries we are here if you need us, have a nice day. Sentence13: On what day would you like a reservation? Sentence14: I can help you find what you are looking for. Sentence15: yes book that for 3 people please Sentence16: Is there anything else I can assist you with today? Sentence17: Train 2662 leaves Cambridge at 21:36 and arrives in Norwich at 22:55. Would you like me to book a ticket for you? Sentence18: Come to think of it, I won't need a reservation. That will be all for today. Thanks for your help! Sentence19: Actually, I would like to book a table at that restaurant. Sentence20: I'll be leaving Cambridge on Monday at 9 PM. Sentence21: May I recommend the TR9246 train arriving at 20:55 Sentence22: Would you like more info or for me to book it? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System