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: Thank you. That is all I need. Sentence2: Hmm, okay, how about another restaurant in the same area and price range? Sentence3: Thanks, I'm all done here. Sentence4: Okay let's try that place. Sentence5: Great news I was able to book you into there and the reference number is 2HILQZBF . Sentence6: Hi I found a restaurant. It is Nandos city centre and it is located at 33-34 Saint Andrews Street. Would you like for me to book it for you? Sentence7: I was able to get you in at Ask on Thursday at 12:45 for 7 people. There is a new reference number, though. Use 0SLQNHXA . Sentence8: Booking was unsuccessful. Would you like to try another restaurant? Sentence9: Yes, please book for Thursday at 12:45 for 7 people. Sentence10: There are several. The Gardenia served mediterranean. You might be interested in it. Ask and Zizzi serve Italian. Sentence11: I need help finding a portuguese restaurant located in the centre, can you assist me please? Sentence12: My pleasure! Have a nice day. Sentence13: Yes, it is. May I help you book? Sentence14: Which restaurant were you able to book me into? Sentence15: Thank you and I hope you enjoy the restaurant. Have a great day. Sentence16: Is this restaurant in the cheap price range? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System