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: Happy to be of help. Enjoy the rest of your day! Sentence2: Any departure time is fine. Sentence3: Your party of 5 is booked for the restaurant at 15:15 and the reference number is 6OWS31DG . Can I help you with anything else? Sentence4: Can you try 15:15? And I'll need a reference number if they have a table available. Sentence5: Sitar Tandoori is an expensive indian restaurant on the east side of town. They are located at 43 High Street Cherry Hinton Cherry Hinton, cb19hx. Their phone is 01223249955. Sentence6: Great that's all I needed, thank you for your help. Sentence7: I need 5 tickets. Can I please also have the reference number? Sentence8: Okay I can book you for TR9020 leaving at 05:16 on Monday. How many tickets would you like? Sentence9: I'd like to book a table for the same number of people (5) for that same day at 16:15 if it's available. I'd also like the reference number for that please. Sentence10: There are 19 trains that meet your needs. Would you like to narrow it down by time or destination? Sentence11: Unfortunately, the time that you provided for 5 people is not available. Do you have other times that you prefer? Sentence12: Yes, actually. I'm looking for information on the Sitar Tandoori restaurant. Sentence13: I want to find a train that leaves from Norwich on Monday. Sentence14: Booking was successful, the total fee is 88 GBP payable at the station . Reference number is : MD5UWGDZ . Is there anything else I can help you with today? Sentence15: There are 6 different trains that arrive by 12:15, did you have a time you wanted to leave Norwich by? Sentence16: Yes, the train needs to arrive in Cambridge by 12:15. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System