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: that is it. have a great day Sentence2: Booking completed Booked car type : white tesla Contact number : 07099497147 Sentence3: You're welcom. good bye. Sentence4: I'm finished now. Thank you. Sentence5: 8 people and 3 nights starting from tuesday. Sentence6: What's the postcode for your favorite attraction? Sentence7: you are welcome Sentence8: Thanks! I am looking forward to checking it out. Can you help me in finding a guesthouse to stay at for tonight? Sentence9: please find me a place to go in the centre Sentence10: There are 24 guesthouses available. Did you have any other criteria? Sentence11: My favorite attraction in the centre of town is The Man on the Moon. It's a concerthall. Their postcode is CB12LF. Would you like more information? Sentence12: Thanks I also need a taxi that will leave The Man on the Moon by 07:00 Sentence13: Ok great, and where will you need to go? Sentence14: To Bridge Guest House please. Sentence15: Reference number is : JOYGNDZ0 . What else may I do for you? Sentence16: I found 3 guesthouses that meet your request; is there an area you prefer? Sentence17: There are many places to go in the centre of town, what types of places do you want to visit? Sentence18: Yes, I would like it to be a 3 star place in a moderate price range. Also, free wifi. Sentence19: I suggest the bridge guest house and I can make a reservation right now for you. What are your dates? Sentence20: No preference, however, I do need a guesthouse for 8 people for 3 nights starting on Tuesday. Once you have booked, please provide the reference number. Thank you. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System