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: That is all for now. Thank you for the help. Sentence2: I not need internet. I have no preference on parking. Sentence3: You're welcome and enjoy your stay. Sentence4: I just need to know what your price range is and how many stars you need? Sentence5: I would like a 0 star hotel. Sentence6: sure, their phone number is 01223354382. anything else today? Sentence7: Can you book it for 6 people. We will need it for 4 days starting on Saturday. I also need a reference number. Thanks Sentence8: Yes, I'm looking for a hotel in the centre of town. Sentence9: What can you tell me about the bangkok city restaurant? Sentence10: I have booked a room for Saturday at the cityroomz hotel. Your reference number is 4AXQUT6U . Is there anything else I can help you with? Sentence11: I sure can! Your booking was successful. The table will be reserved for 15 minutes.Reference number is : QOQA5GZZ . Is their anything else I can help you with? Sentence12: Can you book a table there for me? There will be 6 of us at 16:45 on Saturday. Sentence13: There are five in the centre of town. Do you need parking or wifi? Sentence14: You might want to try CityRoomz. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System