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: Would you like to try sala thong? It is in the west part of town. Sentence2: Can I get the Funky Fun House's phone number please? I think I'll call them and check on it. Sentence3: Sure I can help with that. How many people shall I make the reservation for? Sentence4: Reference number is : W2OO5LNF . Is there anything else? Sentence5: 01223323178 is the phone number Sentence6: There will be five people, can I get the phone number in case I have to change it? Sentence7: That sounds good. Can you book me a table on Thursday at 16:30? Sentence8: Can you help me find a fun place to visit in the east part of town? Sentence9: Thanks, so can you make the reservation for me? Sentence10: You're welcome! Have a great day! Sentence11: Okay great! That's all I needed. Thank you! Sentence12: Please help me find an expensive thai restaurant. Sentence13: The phone number is 01223304705. Sentence14: How about the Funky Fun House for entertainment? It's in the east, but I don't have any information on the entrance fee. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System