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: Yippee Noodle Bar meets your criteria, would you like their information? Sentence2: Thank you for using the Help Desk. Have a great day! Sentence3: I should leave Cambridge on sunday and arrive in london liverpool street by 14:30. I need 4 tickets and a reference number. Sentence4: Yeah, tell me the address for that restaurant and the type of food they serve Sentence5: Booking was successful, the total fee is 66.4 GBP payable at the station . Reference number is : B8QZ32WO. Can I help with anything else? Sentence6: Yes, that's perfect. I need tickets for 4 people, please. Sentence7: Yes, i need to find a restaurant to visit in the centre of town. Preferably in the moderate price range. Sentence8: TR5504 would arrive at 13:27, would that work? Sentence9: Do you know what time you need to depart or arrive by so I can narrow the options? Sentence10: I will be traveling on a Sunday, and I need to arrive by 14:30 Sentence11: You will be traveling on Thursday or Sunday? You've said both. Sentence12: There are 21 that fits your criteria. Which cuisine would you like, to help narrow your choices down? Sentence13: They are an Asian/Oriental restaurant, and are located at 40428 King Street City Centre. Is there anything else I can assist you with? Sentence14: It doesn't matter. Sentence15: That is all that I need. Sentence16: I need a train from cambridge to go to london liverpool street Sentence17: sure, what day are you traveling? Sentence18: I will be traveling on Thursday. Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User