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 will be travelling on Wednesday. Sentence2: I'm looking for a hotel room. Can you help me find one? Sentence3: What area would you like to stay in? Sentence4: Well the Autumn house is my recommendation, cheap price four stars and located in the east. Would you care for more info or a booking? Sentence5: Yes, there are nine hotels you can stay at what area and price range do you want? Sentence6: Yes, I would like to book a train from cambridge to stansted airport please. Sentence7: i can help you with that. what day are you traveling? Sentence8: I was able to book the room, your reference number is 2BU7S7NI . Would you like any more assistance today? Sentence9: Booking was successful, the total fee is 70.7 GBP payable at the station .Reference number is : 3XBEBG2W . Anything else? Sentence10: Yes, please. I need 7 tickets. Sentence11: Yes. Book for 7 people for 2 nights starting on Wednesday. Sentence12: The area does not matter. Sentence13: I'd like to arrive by 14:15 and would like to book on the same day as the hotel booking, please. Sentence14: I would prefer a guesthouse in the cheap price range. Sentence15: Thank you. That is all that I need. Sentence16: i have train tr7996 that leaves at 13:40 and arrives by 14:08. would you like any tickets? Sentence17: What time would you like to leave and/or arrive on Wednesday? Sentence18: Have a nice day, goodbye. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System