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: Well, I would like to leave on Monday. Sentence2: i have the vue cinema located at the grafton centre, east road. their phone number is 08712240240. is there anything else i could help you with? Sentence3: The first train departs Cambridge for Broxbourne on Monday at 05:01 and arrives at 06:01. Would you like to book this train for 17.90 pounds? Sentence4: I would also like a place to go that is a cinema and should be in the centre of town. Sentence5: I need a train from cambridge to broxbourne. Sentence6: What time do you need to depart and arrive? Sentence7: yes, please. book for 1 person Sentence8: That is all, thanks! Sentence9: I want to arrive in broxbourne by 15:45. Sentence10: Your Booking was successful, the total fee is 17.89 GBP payable at the station. Your reference number is Q8BDX7AS . Is there anything else I can assist with? Sentence11: You're welcome! Have a good day! Sentence12: When would you like to travel? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System