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: The booking was successful and your reference number is: SQ1LQGMU . Is there anything else I can assist you with. Sentence2: Can you please provide me the entrance fee, phone number and address of a contemporary art museum in the centre of town? Sentence3: Broughton House Gallery is located at 98 King Street. Is there any other information you need? Sentence4: broughton house gallery museum is free and their phone number is 122 331 4960. Sentence5: There are 23 museums in the area. Do you have a particular part of town you are interested in? Sentence6: Yes, they have. Goodbye! Sentence7: Nope. I think I'm all set. Sentence8: yup there is! Sentence9: Is there a suite available for 2 people for 5 nights starting Friday? Sentence10: I'm looking for a popular museum in the area. Sentence11: I am also looking for a hotel called alpha-milton guest house. Sentence12: The alpha-milton guest house is located at 63 milton road postcode cb41xa. The phone number is 01223311625. Would you like me to create a booking? Sentence13: It was my pleasure to help! Have a great day. Sentence14: What is the address of that museum? Sentence15: Thank you for using our service. Have all of your needs been met? Sentence16: I'm interested in the centre of town. Sentence17: Yes I have several. I have contemporary art, anthropology and others. Any type intrigue you? Sentence18: Okay, go ahead and book it and get me a reference number. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System