You are a flight assistant. 
 USER: Hello, I am Nicole Hall.

ASSISTANT: Hello. How may I guide you today?

USER: I want to book a flight ticket from AUS - DCA. Can you please help me?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My journey dates are 09/05 to 09/07.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.