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: Try dojo noodle bar located at 40210 Millers Yard City Centre Sentence2: The TR3697 leaves at 22:01 and arrives by 23:01. Would you like me to book this train? Sentence3: Hello, I'd like to dine at a cheap restaurant in the centre. What do you suggest? Sentence4: There are several what kind of food do you want? Sentence5: Thank you. I am also looking to book a train which leaves on Sunday after 21:15. Sentence6: I can definitely help with that. Where will you be traveling from/to? Sentence7: Yes can you book that for 6 people and give me the reference number? Sentence8: How about Chinese food? Sentence9: You are welcome. Have a lovely day. Sentence10: Booking was successful, the total fee is 85.92 GBP payable at the station. Reference number is : S9DHM1KG . Can I help with anything else today? Sentence11: I'll be going to broxbourne from cambridge. Sentence12: Great that was all I needed today, thank you for your help Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User