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: That is correct! One ticket has been booked and your reference number is WB6YZLP0 . Is there anything else I can assist you with? Sentence2: I just needed to find out if they offer free parking there. Sentence3: Unfortunately, Cityroomz does not offer free parking--just free internet. Is there something more I can help with? Sentence4: I am planning a trip in cambridge Sentence5: No thank you. Sentence6: That's leaving from Cambridge, right? If so, then yes, book me one seat, and give me the reference number, thanks! Sentence7: Okay. I can help you find a restaurant or hotel, look for tourist information, book a train or taxi. How may I help you ? Sentence8: Thank you so much for calling. Sentence9: TR5517 will leave at 08:01 and arrive by 09:01. Would you like to book seats? Sentence10: I'm also looking for information on a hotel called cityroomz. Sentence11: I need a train going to Broxbourne that leaves after 8:00 on Monday Sentence12: I have it be sure to give me your preferences and we can start booking Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User