Teacher: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Teacher: Now, understand the problem? If you are still confused, see the following example:
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
Solution: Answer: (A) User
Reason: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Now, solve this instance: Sentence1: Hi, I am looking for information on a train. Sentence2: I have two guesthouses. Would you like a cheap one that is a 4 star, or a moderately priced 3 star? Sentence3: I need to book seats for 4 people please, and can I get the reference number for that? Sentence4: Yes, that sounds perfect. I'll need 4 seats. Sentence5: I need a hotel in the west with free parking please. Sentence6: I actually need a guesthouse instead of a hotel, please. Sentence7: Do you care about the price range? I have one cheap and one expensive hotel that fits your current criteria. Sentence8: Great! I found 9 trains that match your requests. I'll be happy to book one if you'll let me know how many tickets you need. Sentence9: Your booking was successful, the total fee is 66 GBP payable at the station . Your reference number is : P6G0S9IT . Is there anything else I can help you with? Sentence10: I'd like to arrive by 10:30 on Thursday, please. Sentence11: First let's verify which train you want. The TR1719 will have you at your destination around 10:09. Sentence12: What time would you like to leave or arrive by? Sentence13: I'd like to go to Cambridge and will be departing from Peterborough. Sentence14: You came to the right place! Where would you like to go? Question: Who has spoken the sentence 4? (A) User (B) System
Student:
Answer: (A) User