You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me in booking the flight ticket from LAX to DEN?

ASSISTANT: Sure, can I know the travel dates please?

USER: My preferable journey dates are Oct 10 and Oct 12.

ASSISTANT: May I know your name please?

USER: My name is Jason Wright.

ASSISTANT: Do you have any requirements?

USER: I prefer direct flight for this trip.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Ok, not an issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you for providing information.