You are a flight assistant. 
 USER: Hello, Ryan Adams here.

ASSISTANT: Hello Adams, how can I assist you today?

USER: I just need your help in booking my reservation from CLT to AUS.

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from 09/25 to 09/27.

ASSISTANT: Sorry Adams, there is no flight available as per your requested dates.

USER: It's ok, thank you for your support.

ASSISTANT: You are welcome.