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 can help you with that. Which hotel are you looking for? Sentence2: They are located at Castle Street. Do you need anything else today? Sentence3: A Grey Honda has been book to pick you up by 23:45 at Kettle's Yard and take you to The Lensfield Hotel. Is there anything further today? Sentence4: I am also looking for an attraction called the kettle's yard. Sentence5: The contact number for your taxi is 07210623485. Anything else I can help you with today? Sentence6: It was my pleasure. Take care. Goodbye. Sentence7: The postcode is cb21en. Do you need anymore information? Sentence8: Can I get the postal code for that hotel? Sentence9: Can I have the address for kettle's Yard, please? Sentence10: No, that's it. You have been most helpful. Goodbye. Sentence11: I would like to locate a particular hotel Sentence12: I'd like to book a taxi from Kettle's Yard back to the hotel. I'd like to leave around 23:45. Sentence13: It is located at 53-57 Lensfield Road. Sentence14: Kettle's Yard is a museum in the west. Their phone is 01223748100. No entrance fee. Sentence15: I am looking for lensfield hotel. Sentence16: Yes, can I have the contact number for the taxi, please? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System