You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you find me a business class flight to reach Denver?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I will fly on May 27 and return on May 29.

ASSISTANT: Kindly share your travelling airport codes.

USER: My source point is LAS and my destination is DEN.

ASSISTANT: Ok, please share your connection limit.

USER: I prefer a connecting flight.

ASSISTANT: Do you have any specification?

USER: I want my return flight in morning.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Ok, thank you for the information.

ASSISTANT: May I know your name for documentation purpose?

USER: My name is James Adams.

ASSISTANT: Thank you for reaching us, have a nice day.