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 was able to book your taxi for you. It will get you to Bedouin by 15:30. Be expecting a blue Honda. Their number is 07893602795. Sentence2: I need a place to dine on crossover food. It should be in the centre Sentence3: Yes, they are a moderately priced guesthouse in the south. They are rated 4stars and include both internet and parking. Sentence4: There are no restaurants that serve crossover food. Is there a different tyoe of food we can search for? Sentence5: Ok, could you also give me some information about the aylesbray lodge guest house? Sentence6: The six of us will be arriving on Thursday. Sentence7: You are very welcome. It has been a pleasure to assist you today. Have a wonderful day and enjoy your trip. Goodbye Sentence8: I can, what are your arrival details? Sentence9: what about african food? Sentence10: There is one called Bedouin. Would you like a reservation? Sentence11: I would, thanks. I need a table for 6 on Sunday, at 15:30. Sentence12: It's just me. Is that necessary though? Sentence13: How many people will be traveling? Sentence14: I also need a taxi that arrives at he restaurant by the booked time. Sentence15: Would you be able to book one of those for me please? Sentence16: I will need to stay 4 nights please. Sentence17: Alright, I've got your booking taken care of and your reference number is 75CDS1UP . Is there anything else I can help you with? Sentence18: Booking was successful. Reference number is : ZF9U0U48 . Sentence19: okay and how long is your stay so I can book the room for you Sentence20: You have been a great help. Thank you so much. Have a wonderful day and keep up the great work. Goodbye Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User