You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am planning for a holiday trip to DEN, so please book a flight with 0 connection.

ASSISTANT: Sure, what are your planned trip dates?

USER: My travelling dates are 02/19 and 02/21.

ASSISTANT: Ok, please share your source code to proceed further.

USER: My source airport codes is AUS.

ASSISTANT: Sorry to say, no flights were available on your route for your required dates.

USER: Ok, no issues.

ASSISTANT: May I know your name for documentation purpose?

USER: My name is Dorothy Clark. Thank you for your time.

ASSISTANT: Thank you for choosing us, have a nice day.