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: You can take train TR8464 to arrive there in time. Would you like me to book it for you? Sentence2: i don't have anything that fits those criteria, would you like me to look for something else? Sentence3: Not a problem. You have a great day, as well! Sentence4: Your room has been booked. Your reference number HPLM0SM6 . Sentence5: Sure! For how many people? Sentence6: I'm looking for a train leaving cambridge on sunday. Sentence7: I'll be glad to help you with that. What area would you like to stay in? Sentence8: I am also looking for a place to stay. Sentence9: Can you try those same things but in the moderate price range? Sentence10: I can help with that. What is the destination and what time would you like to leave? Sentence11: Great, that's all I need, thanks so much for your help! Have a great day! Sentence12: Here is the booking information:Booking was successful, the total fee is 71.68 GBP payable at the station . Reference number is : FCZJMTAI . Sentence13: Somewhere in the north, with 4 stars, free parking, and expensive. Sentence14: That bring sup six results, I recommend the home from home guesthouse, would you like more info or a booking? Sentence15: 2 people and 1 dog Sentence16: Yes, could I book one for 4 nights starting from Wednesday? Sentence17: I would like to go to stevenage by 14:00. Sentence18: Yes please book it for 7 people and provide the reference number. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System