You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you find a flight for me from PHX to AUS, to meet my father?

ASSISTANT: Sure, may I know the planned travel dates?

USER: Ok, my trip dates are from Apr 29 to May 01.

ASSISTANT: May I know the name?

USER: Sure, I am Ashley Lopez.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.