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: Okay, where will you be departing from and what is your destination please Sentence2: Thanks that's all I need for the night. Sentence3: Your restaurant booking was successful. The table will be reserved for 15 minutes. Reference number is : IH9ELVHA . Is there something more I can help with? Sentence4: Thank you very much and have a wonderful evening. Sentence5: Booking was successful, the total fee is 53.7 GBP payable at the station, Reference number is : GZWMON81 . Any further questions today? Sentence6: sure, i have their information. what would you like to know? Sentence7: I need the train for 3 people. Sentence8: Tr5570 will be perfect. Shall I book it? Sentence9: How many people need train tickets? Sentence10: I also need a train Sentence11: Yes, please and can you provide me a reference number? Sentence12: Hi, I am looking for a restaurant called nandos city centre. Sentence13: I'll be leaving broxbourne and traveling to cambridge on friday. I must arrive by 10:30 Sentence14: Please do assist to book a table for 3 people for me for Friday dining by 13:45 and also let me have their address and phone number. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System