You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me booking a flight ticket from IAD to AUS?

ASSISTANT: May I know your travelling dates?

USER: I will start on 10/12 and return on 10/14.

ASSISTANT: Do you need a direct flight for this journey?

USER: I need a break in my journey.

ASSISTANT: May I know your other specifications?

USER: I am comfortable with any flight.

ASSISTANT: Meanwhile, may I know your good name please?

USER: I am Dorothy Thomas.

ASSISTANT: I am very apologetic to inform you this news, but there is no flight available for your journey.

USER: No problem, thank you for the information.

ASSISTANT: Dorothy Thomas, thank you for choosing us.