You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you?

USER: I am Rachel Wilson. I want to book a flight ticket to attend my sister's marriage.

ASSISTANT: Sure, I can do that for you. May I know your journey details?

USER: My travelling dates are from 02/18 to 02/20 and my origin airport is Philadelphia, PA- PHL to  Austin, TX- AUS.

ASSISTANT: Sorry for the inconvenience, We did not find any flights matching your particulars.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.