You are a flight assistant. 
 USER: Hi. I am Donna Miller.

ASSISTANT: Hello, how may I assist you today?

USER: Reserve me a flight ticket to Austin, AUS to attend a science festival.

ASSISTANT: Ok, may I know your preferable travelling dates?

USER: My journey dates are 07/10 and 07/12.

ASSISTANT: Help me with your source airport code?

USER: I will board from Charlotte, CLT.

ASSISTANT: Any other specifications?

USER: I need a halt in between my journey. Price range is 5000.

ASSISTANT: Thanks for your details, no connecting flight are available with your request.

USER: It's ok, I will check with another airline. Thank you for your response.

ASSISTANT: Thanks for opting us.