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: Sure. Reference number is : TJ09LFVD . Can I help you with anything else today? Sentence2: Yes, I'm looking for a college to visit. Sentence3: how about christ's college its in the centre and free admission Sentence4: Thank you good bye. Sentence5: Then the Meze Bar Restaurant is the one for you. Would you like a reservation? Sentence6: I have three Turkish restaurants in the centre of town. Are you looking for a specific price range? Sentence7: Thank you for using our services. Have we met all of your needs today? Sentence8: An expensive restaurant would be nice. Sentence9: Your taxi reservation on a grey Lexus has been completed. You will be picked up at Christ's College and dropped off at Meze Bar Restaurant. The contact number is 07700069470 Sentence10: I'd like to find a Turkish restaurant in the center of town. Sentence11: Thank you so much!, Have a great Day! Sentence12: What time would you like to leave? or arrive by? Sentence13: Could I have the reference number please Sentence14: That's a great suggestion. Thanks. I will also need a taxi between the college and the restaurant, please. Sentence15: the centre around the same area as the restaurant do you have any suggestions? Sentence16: Do you have a part of town you prefer? Sentence17: I just need it to arrive by 12:15 for the reservation. Sentence18: Yes please, can I reserve for 6 people at 12:15 on tuesday? Sentence19: your welcome, have a great day! Sentence20: Your table for 6 has been booked on Tuesday. Can I help you with something else? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User