You are a flight assistant. 
 USER: Hello. I am Barbara Lewis.

ASSISTANT: Hello, how may I aid you?

USER: I want to travel from AUS to CLT. Can you book a flight ticket for me?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I want to fly in the flight on 03/23 and 03/25.

ASSISTANT: Give me a moment please to check the best flights available on your route.

USER: Ok.

ASSISTANT: Sorry to say, no flights were found on your route.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.