You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Brandon Garcia. I am planning to visit New England Aquarium at Boston, could you please help me with booking a flight ticket from JFK to BOS?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I would like to depart on Oct 2nd and return on Oct 4th.

ASSISTANT: Do you have any preferences?

USER: I need a business class in connecting flight. And make sure that my depart time is afternoon.

ASSISTANT: Sorry, there is no flight available on your journey dates as per your given requirements.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: You are welcome, have a nice day.