You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Myself Elizabeth Green. Will you help me in booking the flight ticket from PHX to AUS?

ASSISTANT: Sure, please provide me your travel dates.

USER: My travelling dates are 06/14 and 06/16.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: My pleasure.