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: Thanks, I'm all set. Bye! Sentence2: That sounds perfect. Can you give me their address, please? Sentence3: Will you recommend a college in the centre of town? Sentence4: I would like to book it for 7 people for Two nights, starting wednesday. Sentence5: Yes, please give me the reference number. Sentence6: There are many, many attractions to choose from in this area. Do you have something specific you'd like to see? Architecture? Museum? Park? Sentence7: Sure, Christ's College is located at saint andrew's street. Is there any more info you need today? Sentence8: Booking was successful. Reference number is : GJPMZK85 Sentence9: Christi's college is in that area and has free admission. Sentence10: I am looking for a guesthouse to stay in. It should have 0 stars. Sentence11: Can you also provide the address an attraction in the town centre? Sentence12: Thank you for allowing me to help you. Have a great day. Sentence13: OKay, would you like me to send you a reference number? Sentence14: Okay, and what area will you be staying in? Sentence15: Not important, as long as long as it has wifi Sentence16: I could recommend the El Shaddai. It is a guesthouse in the centre of the city and it has internet. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User