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: Ok, I have booked a taxi for you. Its going to be a blue Audi & the contact number is 07493726924. Sentence2: I'd like to book a taxi to take me from the hotel to the restaurant. Sentence3: Hmm, I've never been there. Let's try that. Can you book me a room for Saturday for 5 guests, 2 nights please? Sentence4: Great, you've been awesome. Bye. Sentence5: I would like to stay on the east side, please. Sentence6: Thanks. I need a place to stay also. I would like a guesthouse with free wifi. Can you help me find one? Sentence7: Could I have the postcode, and address of both of them please? Sentence8: Sala Thong is at 35 Newnham Road, Newnham, cb39ey and Bangkok City is at 24 Green Street City, Centre, cb23jx. Sentence9: No problem! Booking was successful. Your Reference number is : MJ95SPPP . Sentence10: Thank you, I would like to commute from the hotel to Sala Thong, and I want to leave by 06:15. Sentence11: I have 2 places, would you like the one in the west or centre of town? Sentence12: There are 6 guest houses in the east that offer free wifi. Can I recommend the Autumn House? Sentence13: Need a place to eat, panasian food, pricey! Sentence14: I'm sorry, there doesn't seem to be any Panasian restaurants that fall into that price range. Would you like to look for a different type of food? Sentence15: I show 23 guesthouses available with free wifi. Which area of town would you like to stay? Sentence16: Have a great day and a great trip! Goodbye. Sentence17: Which restaurant will you be going to and what time would you like to arrive? Sentence18: Thai food would be just as good. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System