You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please reserve me a flight ticket from DEN to CLT.

ASSISTANT: Sure, I am here to help you. Can you please let me know your travelling dates?

USER: My trip dates are May 03 and May 05.

ASSISTANT: Do you have any break in between journey?

USER: I prefer direct flight for this trip.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Can I have your good name?

USER: I am Betty Clark.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.