You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to attend for a meeting in Washington, IAD. Can you please aid me for booking?

ASSISTANT: Sure, please share me your source airport code?

USER: I am boarding from AUS.

ASSISTANT: May I know your planned journey dates?

USER: My planned journey dates are Feb 13 and Feb 15.

ASSISTANT: Do you want any connection in between your flight journey?

USER: I am comfortable with any flight.

ASSISTANT: Please mention do you have any other requirement?

USER: I don't have any other requirements.

ASSISTANT: May I know your good name?

USER: Sure, my name is Brain Moore.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for reaching us, we hope see again.