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: Yes please. Book a table for my party of 8 for 12:45 on Monday. Sentence2: I have made your reservation, with reference #D8E6CV1X . Can I help you with anything else today? Sentence3: I want to arrive in time for my lunch reservation. Sentence4: The good luck Chinese takeaway. Sentence5: Taxi is ready, look for a black lexus, they can be reached at 07505999310, any further questions? Sentence6: That is one of my favorite guesthouses. Do you need a reservation there? Sentence7: thank you for all the information. goodbye Sentence8: No, that's all I needed. Thank you for your help, it's much appreciated! Sentence9: What time would you like to travel? Sentence10: Yes, I am also looking for a hotel named kirkwood house. Sentence11: I also need a taxi between the two places. Sentence12: Yes please for 5 people for 5 nights from Monday please. Sentence13: That's on 82 Cherry Hinton Road. If you need to contact them for directions, their number is 01223244149. Can I help with anything else? Sentence14: Do you know the name of it? I can try and find it for you. Sentence15: I can't find a restaurant I am looking for. Sentence16: Booking was successful. Your reference number is K7VLK45Q . Will that be all? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User