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'll need a booking for 5 at 18:45 on Thursday. Sentence2: Thank you! Also, can you recommend a moderately-priced vegetarian restaurant, please? Sentence3: sure, what is your destination? Sentence4: Could you tell me the price for a ticket, and the typical travel time? Sentence5: The train ride is 49 minutes and it will cost 12.80 pounds. Sentence6: I'm sorry. I'm not finding any vegetarian restaurants at all. Would you like to choose a different type of food? Sentence7: Any time. I was happy to help. Sentence8: You are doing a great job! That's all I needed. Sentence9: Okay. Your booking was successful. The reference number is MZZNA6KZ . Your table will be reserved for 15 minutes. Sentence10: Thank you for your help. Sentence11: I need a train for Thursday please. Get me one that arrives by 13:45 Sentence12: Sure! TR1661 will leave at 11:54 and arrive by 12:43. Do you require more information or do you want book now? Sentence13: I'll be heading to Cambridge. Leaving from Stevenage. Can you tell me about this? Sentence14: Ok, try the asian oriental food then. Sentence15: Ok the only one is Yippee Noodle Bar. Would you like for me to book a table? Sentence16: Thank you for using our system today! Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System