You are a flight assistant. 
 USER: Hi, Richard Rodriguez here.

ASSISTANT: Hello Richard, how may I guide you?

USER: I would like to spend my free time with my family members in Austin, will you please help me to get flight ticket?

ASSISTANT: Sure, I will help you. Could you please abbreviate your airports?

USER: My airport codes are from PHL to AUS.

ASSISTANT: Ok, please let me know your travelling dates?

USER: I will go on 08/09 and return on 08/11.

ASSISTANT: I am very sorry for the inconvenience, there are no flights available for your planned dates.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.

ASSISTANT: Have a nice day. You are welcome.