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 show 10 Chinese restaurants located in the centre. Do you have a price range in mind? Sentence2: Booking was successful, the total fee is 75.09 GBP payable at the station . Reference number is : KXH54OG6 . Is there anything else I can help you with? Sentence3: Can I book it for 1 person at 14:15 on thursday? Sentence4: I was able to book you, the reference number is 83KK1ZQE, can I assist with anything else? Sentence5: I can't wait to eat there, thanks. I also need train information. I am going to birmingham new street and need to arrive by 09:45. Sentence6: Help me find a chinese place to dine in the centre please. Sentence7: Train TR8310 would be perfect for you shall i book it ? Sentence8: Yes, 1 ticket please. Sentence9: You are very welcome. I hope you enjoy your trip. Sentence10: There are 4 Chinese restaurant in the centre of town in the expensive price range. May I suggest HK Fusion? Sentence11: WIll you be travelling Thursday, as well? Sentence12: Thank you for using our services. Have a great trip! Sentence13: No, I need to leave on Friday. Sentence14: I would like to stay in the expensive price range. Sentence15: Thank you for your time. Sentence16: I am good to go now, thank you so much! Take care! Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System