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: That is all for now. Thank you so much. Sentence2: Yes, I would consider a star rating of 4. Can you pick one for me please? Sentence3: You are so welcome! You take care now, bye! Sentence4: I have booked it and here is the information-Booking was successful, the total fee is 105.6 GBP payable at the station . Reference number is : SLAC2W0W . Sentence5: There are several trains departing from Cambridge on Saturday. Where are you traveling and what time would you like to leave? Sentence6: Okay, I booked it and your reference number is CEVX0OU3 . Anything else? Sentence7: huntingdon marriott hotel is a 4 star hotel Sentence8: Yes please! I want to book it for 8 people for 4 nights starting tuesday Sentence9: There are multiple trains leaving that day after 12. First one departs at 12:06. Sentence10: Yes, the Huntingdon Marriott Hotel has free WiFi. Would you like me to book it for you? Sentence11: I'm sorry, I am not able to find a 5 star hotel with free internet. Would you consider a 4 star hotel? There are 3 of those. Sentence12: Oh I almost forgot can you help me find a 5 star hotel with free internet? Sentence13: Thank you that is all I need Sentence14: Ok and does that have free wifi? Sentence15: I'm going to Peterborough and want to leave after 12:00. Sentence16: Book the first one for 8 people please. Sentence17: Can you help me find a train departing out of cambridge this saturday? Sentence18: Thank you for contacting us. Have a nice day. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User