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: Booked! fee is 56.32 GBP payable at the station. Reference number: G5DHGHZV . Also do you have an area preference for the hotel? Sentence2: Sure how many tickets? First train leaves at 05:16 and the last 09:16. Do you have specific time in mind? Sentence3: That should work, can I please get a reference number? Also, I am looking for a place to stay in the moderate price range that is 4 stars. Sentence4: No, but I would prefer a guest house. Sentence5: Just any moderate guest house with 4 stars that you recommend. I need it for 3 nights for my group. For the same day we are traveling. Sentence6: We have 33 total entries that match you criteria, location varying from north, south, and east. Would you like any more information on them? Sentence7: The train should depart from norwich and should arrive by 17:15. for 4 people Sentence8: I've booked your group rooms at the Acorn Guesthouse for Saturday, staying 3 nights. Reference number is 8Y6XQ1PM . Need anything else today? Sentence9: Thank you for using our service. Have a great day. Sentence10: I'd like a train leaving from Norwich and arriving by 17:15, please. Sentence11: I'll be going to Cambridge on Saturday. Sentence12: No that was all thank you. Sentence13: How about TR1156, it will depart Norwich at 15:16 and will arrive in Cambridge at 16:35? Does this work for your schedule? Sentence14: Certainly! First, can you confirm the day you are traveling and the destination you are traveling to? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User