You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Myself Charles Miller. I need to travel Austin, can you please book flight ticket from PHL and AUS?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My journey dates are 08/01 and 08/03.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I need a direct flight.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Please take your own time.

ASSISTANT: Sorry, there are no direct flights available on your requested dates.

USER: That's ok, I will choose any other source to travel my place.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are welcome.