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: Yes. You could go to Nusha or Tenpin. Sentence2: I want to visit an architecture attraction in the south of town. Sentence3: Is there any with the type of entertainment here? Sentence4: It's cb17dy. They are located at cambridge leisure park, clifton way. Is there anything else I can help you with? Sentence5: I also need a taxi to commute between the two places. I want to leave the attraction by 03:15. Sentence6: I'm not sure yet, what is the postal code there? Sentence7: Booking completed! Booked car type : blue tesla Contact number : 07944936323 is there anything else i can help you with? Sentence8: In what area would you like to stay? Sentence9: Its postal code is cb22ha. Sentence10: No, that's all I need. You've been very helpful, thank you! Sentence11: My pleasure! Enjoy your stay! Sentence12: Tenpin sounds fun. What's their postcode, please? Sentence13: What area would you recommend? Sentence14: Yeah, could you find me a cheap place to stay with free wifi? Sentence15: There is Rosa's Bed and breakfast in the south part of town, not too far from Tenpin. Would you like me to check if they are available? Sentence16: Yes, rosa's does have free parking. Would you like me to book that for you? Sentence17: Does it have free parking, I really don't need free parking, and I worry about security at the places that do have free parking. Sentence18: I don't show anything in the south. can i look in another area for you? I'm sure we can find some great architecture elsewhere. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System