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: You are welcome. Thank you for contacting Cambridge TownInfo centre. Goodbye. Sentence2: Yes, you have. Thank you. Sentence3: Okay, I found 18 colleges all over town. Is there a particular area you're interested in so I can narrow down your options? Sentence4: The postcode is CB3 9AL. What else can I help you with? Sentence5: I was able to book on train TR9263 for Tuesday leaving at 05:54 and arriving at 06:43. The total fee is 89.6 GBP and the reference number is 0QGD9JB5 . Sentence6: cambridge on teusday. book for 7 people and please get me reference number. Sentence7: What part of town is it in? Sentence8: Thank you for using our services. Have we met all of your needs? Sentence9: Whichever you recommend is great Sentence10: Thank you I also need to find a college to go to. Sentence11: depart from stevenage and should arrive by 15:30. Sentence12: Clare Hall is in the west part of town. Do you need more information? Sentence13: I'm looking to book a train, if you could help me. Sentence14: I recommend clare hall located at herschel road and has free entrance. Sentence15: We can definitely help you with that. Where will you be departing from, and what is your destination? Sentence16: I can certainly look that up for you, what is your destination? Sentence17: That is everything thank you so much. Sentence18: Thank you! Can you please tell me the postcode? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System