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: What day will you be traveling? Sentence2: You're welcome! And thank you, likewise! Sentence3: I am looking for a train going to Cambridge and should depart from King Lynn arriving by 08:15 Sentence4: Okay, there are 9 different available restaurants. What type of food would you like to eat? Sentence5: I need it on Friday. Sentence6: Can I ask you for a restaurant suggestion in the north today? Sentence7: that is it for today. have a god day Sentence8: I would like to try French and I need a reservation for 2 people at 12:45 on Friday. Sentence9: Yes, I need 2 tickets please. Sentence10: I have booked you for Restaurant Two Two. The table will be reserved 15 minutes after 12:45. Reference number is 6BD74VBB . Is there anything else I can do? Sentence11: Your booking was successful, the total fee is 19.6 GBP payable at the station . Reference number is : SKG9JJLB . What else can I help you with today? Sentence12: What types of expensive restaurants are in that part of town? Sentence13: I have Asian Oriental, Chinese, French, Italian and Indian. Any preference? Sentence14: There is a train arriving at 07:58 would you like me to book tickets for that one? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System