You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Jennifer Wilson. Will you help me in booking he flight ticket from PHL to AUS?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are 07/21 and 07/23. I need a direct flight in my journey.

ASSISTANT: Sorry, there is no flight available on your requested dates.

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

ASSISTANT: You are welcome.