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: Sure, I can help you with that. Where would you like to travel to? Sentence2: It is in the moderate price range at 52 gilbert road Sentence3: Going to Cambridge. Sentence4: Yes please. Could you also provide me the reference number? Sentence5: There will be 2 people. Sentence6: I am looking for information in Cambridge Sentence7: I'm looking for a hotel called, Archway House. Sentence8: And for haw many people ? Sentence9: I will also need a train for Saturday, leaving after 13:45. Sentence10: I will be departing from London Kings Cross. Sentence11: Where will you be departing from? Sentence12: Booking was successful, the total fee is 37.76 GBP payable at the station . Reference number is : 6BM4QJXX . Sentence13: Alright. I'd like a room on saturday for 4 nights. 2 people will be staying. Sentence14: Booking was successful.Reference number is : S9V74O1G . can i be of any help again? Sentence15: Iwillgetthatreferencenumber for you. Sentence16: You're so welcome! Feel free to come back if you think of anything else you need! Bye! Sentence17: I have train TR4101 that leaves at 15:17 and arrives at 18:08. Would you like me to book it for you? Sentence18: Great thank you! That's all I needed! Bye! Sentence19: What type of information do you need help with? Sentence20: Ok, thank you. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User