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: Hello, I'm sight seeing in Cambridge and I'm looking for somewhere to eat on the westside. Sentence2: Any cuisine is fine, but I would like it to be in the moderate price range. Sentence3: Please book a table for 2 at 19:15 on Saturday with a reference number and l need a theatre in the same area as the restaurant. Sentence4: That's okay, can I get a taxi from cambridge arts theatre to Meghna by 19:15? Sentence5: Okay great. Enjoy your time in Cambridge and please let us know if there is anything else we can do to help! Sentence6: What is the entrance fee to the Cambridge Arts Theatre? Sentence7: That sounds great. Can I get the phone number? Sentence8: The phone number for the Cambridge Arts Theatre is 01223503333. Is there anything else I can help you with today? Sentence9: Your booking is complete! Your taxi will be a yellow ford. The contact number for your driver is 07755954404. Is there anything I else I can help you with? Sentence10: No, thank you. Sentence11: Ok, how about Meghna? It is a moderately priced Indian restaurant in the west side. Sentence12: I apologize but the entrance fee for the Cambridge Arts Theatre is unlisted. Would you like their phone number instead? Sentence13: Okay done I have booked you a table for two and your reservation number is 6X0OV3JV . I have many theaters in the same area. What about Cambridge Arts? Sentence14: There are 14 restaurants on the west side. Are you looking for a restaurant with a particular cuisine? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System