You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Can you please find me a direct flight from Austin to Denver? As I'm planning to attend an interview.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my planned travel dates are 04/07 and 04/09.

ASSISTANT: Can you please share your source and destination airport codes?

USER: My source and destination airport codes are AUS and DEN.

ASSISTANT: May I know your good name please?

USER: Yes, my name is Deborah Collins.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us.