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 am sorry, they are unable to accommodate those dates. Can you shorten the stay or try other days? Sentence2: Thank you, I was able to book you for one room on Sunday for 4 people. The Reference number is 08QSW5MB . Is there anything else I can help with? Sentence3: Sure! How about the Cambridge Belfry? It's cheap with four stars. Would that work for you? Sentence4: There are two hotels and two guesthouses on the west side of town. Is there a certain price range you prefer? Sentence5: I am going to Cambridge and I have to leave after 21:15. Sentence6: Where would you like to travel and what time would you like to go? Sentence7: Yes, it does! How many nights would you like? Sentence8: Book the earliest one for 4 people. Sentence9: If you need anything else, let us know. Good bye. Sentence10: A hotel that includes parking. Sentence11: I would like to book it for 4 people and 4 nights starting on Sunday. Sentence12: Okay, booking was successful. The total fee will be 52.8 GBP and your reference number is VFUX9JT1 . Is there anything else I can assist you with? Sentence13: I'd also like to find lodgings on the west side of town. Sentence14: Yes that will be fine as long as it includes free parking. Sentence15: Hi. Are there any trains from Peterborough on Sunday? Sentence16: No, that's all I needed today. Thank you so much. Sentence17: There are a number of trains you can choose, the earliest one being at 21:19 and the latest at 23:48. Sentence18: Can we try booking it for just one night then? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System