You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Laura Thomas.

ASSISTANT: How may I assist you?

USER: Can you please help me in booking a flight ticket to PHL from AUS?

ASSISTANT: Sure, could you please share your planned trip dates?

USER: My trip dates are from 03/08 to 03/10.

ASSISTANT: Please wait a moment, I will find the availability of flights.

USER: Ok.

ASSISTANT: Laura, no flights has been found on your planned trip dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.