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: There are two cheap guesthouses located in the centre. My recommendation would be Alexander Bed and Breakfast. Sentence2: Your booking was successful at the Alexander bed and breakfast. The reference number is F9VVA2GL . Sentence3: Yes, there are no accommodations available that fit that criteria. Would you like to choose something else? Sentence4: Hello, we're planning on a trip to Cambridge and would like lodging info. Can you tell us if there is a hotel in the economical range near the centre? Sentence5: Really? Not even a guest house? Sentence6: Unfortunately, there are no economical hotels in the centre of Cambridge. Would you like to look in a different area? Sentence7: Thank, you goodbye Sentence8: Welcome , have a lovely day too. Sentence9: Sounds great! Can you book it for 5 people and 4 nights starting from monday? Sentence10: I'm looking for a cheap hotel in the centre. Question: Who has spoken the sentence 7? (A) User (B) System
Student:
Answer: (B) System