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: It's alright. I'm also looking for a train that leaves on Thursday from Cambridge. I'm trying to get to Stansted Airport by 08:30. Sentence2: Booking was successful for TR7966, the total fee is 80.8 GBP payable at the station. Your eference number is : NT1R53H8 . Can I help with anything else? Sentence3: You, too! Goodbye! Sentence4: That is unfortunate. Could you provide me with their phone number so I can ask them myself? Sentence5: Unfortunately I do not have access to that info. Sentence6: It doesn't matter. Let's take the 5:40. Sentence7: Not a problem! You can call them at 01954781018! Sorry about that! Sentence8: Goodbye and hope to see you again. Sentence9: I planning a trip to Cambridge toward the west side I would like information on the entertainment in this part of the town . Sentence10: That's all I needed. Thank you! Sentence11: I'm glad I could be of service, have a good day. Sentence12: Perfect. Just one ticket? The cost will be 10.10 pounds. Sentence13: There are three possible trains that meet your criteria. Would you like to depart at 05:40, 06:40, or 07:40? Sentence14: Yes, how much is the entrance fee? Sentence15: I actually need 8, I'm taking my family with me. Sentence16: We have Whale of a Time in the west. Would you like any information on this attraction? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System