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 have booked you a taxi at 2:15. The car is a white skoda and the contact number is 07572703155. Is there anything else I can help you with? Sentence2: I will need you to make that reservation and provide a reference number. Sentence3: Nee to go from the hotel and the restaurant. I should leave by 2:15. Sentence4: I can book a taxi I just need the following information the travel time, departure site and the arrival destination. Sentence5: I have Gonville Hotel at Gonville Place. Would you like to book a room there? Sentence6: And how many people do you need the reservation for? Sentence7: Booking was successful. Reference number is : UJUMJ5OS . Anything else you need? Sentence8: No, thanks, but I will be needing a taxi. Sentence9: The postcode is cb23jx. Would you like me to reserve a table for you? Sentence10: Please look in the centre of town. Sentence11: Actually I changed my mind just 2 nights for 5 people Sentence12: I need an expensive place to stay. Sentence13: There are several options. Which part of town would you like? Sentence14: Have a lovely day, goodbye. Sentence15: I will be happy to book a room for you for four nights starting Thursday. Is there anything else I can help you with? Sentence16: Thank you so much. That's all I need today. Sentence17: I don't have a star rating preference but it needs to have free wifi. Sentence18: What star rating would you like? Sentence19: Yes, I need the postcode for Bangkok city restaurant please. Sentence20: Yes can you please book four nights starting thursday Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User