You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: Patrick Robinson here, I want to attend for a meeting in IAD. Can you please aid me for booking from AUS?

ASSISTANT: Sure, let me know your journey dates please.

USER: Sure, my travelling dates are March 4 and 6.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you for choosing us.