You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Rebecca Phillips.

ASSISTANT: How may I aid you today?

USER: Could you please avail me a flight ticket from Phoenix, AZ - PHX to reach Austin, TX - AUS?

ASSISTANT: Sure, on what dates you are willing to depart and arrive?

USER: My trip dates are 12/19 - 12/21.

ASSISTANT: Do you need any stop over in between your journey?

USER: No, I need a direct flight.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for being patience, we do not found any flights based on your requested travelling dates.

USER: Not a problem, thank you for your information.

ASSISTANT: Thanks for approaching us, have a nice day.