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 found one train TR2001 which departs Cambridge at 16:40 and arrives at Stansted Airport at 17:08. Would you like me to book it for you? Sentence2: I also need a train from Cambridge to Stansted Airport. Sentence3: I need to arrive by 17:45. Sentence4: Booking was successful, the total fee is 8.08 GBP payable at the station . Reference number is : TRHSQ5WO . Sentence5: Yes, please book me for that. I will need one ticket. Sentence6: I'm sorry, but I actually need to leave after 16:30. Sentence7: The number is 01223519224. Is there anything else I can help you with? Sentence8: From Cambridge? Stansteadthrough the country though. but need to leave on Saturday and arrive n\by 14:30 Sentence9: What time do you need to arrive by? Sentence10: Yes, I need the phone number please. Sentence11: That will be all. Thank you. Sentence12: Have a great day, glad to help you. Sentence13: It's a night club in the centre, at the address 8 market passage. It costs 5 pounds to get in. Would you like the phone number or postcode? Sentence14: What can you tell me about an attraction called the Fez Club? Sentence15: TR6193 will have you there at 14:08. Would you like me to book a ticket for you? Sentence16: What day are you hoping to travel? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System