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: Sure, please book that for 6 people at 17:30 on wednesday. Sentence2: I want to leave on wednesday after 09:30. I need seats for 6 people and the reference number please. Sentence3: We need to go to Cambridge. Sentence4: We have many options available. What type of food would you like to eat? Sentence5: That should be no problem do you have a departure or arrival time in mind? Sentence6: thanks a lot i enjoyed your service Sentence7: Yes, we love Korean food and want to try the expensive price range, please. Sentence8: How about little seoul? It has gotten great reviews! Sentence9: Sure. There are plenty of places to eat. Do you have a preference for area, price, or location? Sentence10: I'm sorry those are not available. Sentence11: It's not available. Would you like to try a different restaurant? Sentence12: I actually need a train leaving kings lynn on wednesday. Sentence13: Thank you for your help. Good bye! Sentence14: No, could you try that restaurant for later that evening? Sentence15: I am traveling to Cambridge and looking forward to try local restaurants. Sentence16: TR3225 leaves Kings Lynn 10:11 and arrives in Cambridge at 10:58. Do you want me to book this train for you? Sentence17: could you try Monday @ 19:30 please? Sentence18: Thank you for using the Cambridge TownInfo Centre! Sentence19: We are having technical problems. Please call the restaurant directly at 01223308681. Anything else? Sentence20: I also need a place to dine. Can you help me? Sentence21: I don't think so. Sentence22: Could you try Monday then? Sentence23: It is not available for the time requested. Should I check different time? Sentence24: I am sorry, I can't book anything for that restaurant at all that night. Is there a different restaurant I can try for you? Sentence25: Pardon? Were you able to reserve our table, please? Sentence26: I can do that for you! Where would you like to go? Sentence27: Booking was successful, the total fee is 58.8 GBP payable at the station .Reference number is : USQHZNBW . May I assist you with anything else ? Sentence28: yes and please include a reference number Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System