You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Deborah White. Assist me in booking flight ticket to Charlotte, NC - CLT?

ASSISTANT: Sure, please share your travelling dates?

USER: 03/25 to 03/27 I have planned.

ASSISTANT: Kindly mention your source point?

USER: Austin, TX - AUS is my source point.

ASSISTANT: Sorry to inform that no flight are available with your request.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thanks for approaching us.