You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Hernandez.

ASSISTANT: Sharon, how can I help you?

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

ASSISTANT: May I know your travel dates?

USER: I want to travel on 08/04 and 08/06.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no flight is available for you.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: You are welcome.