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: Okay, you are so welcome! Bye! Sentence2: How about the Funky Fun House on Mercers Row? Sentence3: OK, you have a table for 1 at The River Bar, reference #G2XQJ7B5 . Can I help you with anything else today? Sentence4: Thanks, that's all I needed today. Goodbye! Sentence5: I am also looking for a place to go for some entertainment in the east. Any Recommendations? Sentence6: Great, thanks for that. Are you able to also book me a taxi so I can commute between the two places? Sentence7: Yes, what time are you wanting to leave? Sentence8: You can call them at 01223304705. The address is 8 mercers row, mercers row industrial estate. Their entrance fee is unlisted Sentence9: Sure, can you give me the address, phone number and entrance fee. Thanks. Sentence10: There is one restaurant that serves modern european at a cheap price, it is the river bar steakhouse and grill in the centre of town. Would you like more information? Sentence11: im looking for a place that serves morden european food and with a cheap price range Sentence12: I have reserved you a taxi. they will be in a blue audi with the phone number 07033607984 if there is any issues. Sentence13: Could you book me a table there for 1 on Friday at 11:45? Sentence14: Well before 11:45 to make sure I don't miss the reservation would be good. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User