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: There are two- one in the south and one in the centre. Which would you like to visit? Sentence2: I would like a train going to cambridge from leicester in the morning. Can you book a seat for me and let me know the reservation number? Sentence3: Booking was successful, the total fee is 151.19 GBP payable at the station. Your reference number is : MRTSNQMU . Sentence4: Thank you so much for the information. I will call them. Have a good day. Sentence5: I need to arrive by 10 am please on a Tuesday. Sentence6: Thank you for contacting Cambridge TownInfo Centre. Have a great day! Sentence7: Cineworld Cinema is located in postcode cb17dy. The phone number is 00872208000 and you'll have to call them directly for entrance fee information. Sentence8: There are trains that leave at 9 minutes past the hour, every hour, all morning. What time would you like to leave? Sentence9: How about train 4734? It arrives in cambridge at 09:54. Sentence10: Anytime, happy to help. Sentence11: Yeah you are very welcome. Sentence12: I would like the cinema in the south please. I need the phone number, entrance fee, and postcode. Sentence13: I'm also looking for a cinema to visit? Sentence14: Sounds good. I need 4 tickets. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User