You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Sarah Wright, planning to visit Austin. Can you please reserve me a ticket from PHX to AUS?

ASSISTANT: Sure, may I know your trip dates please?

USER: My preferable journey dates are from 11/08 to 11/10.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Most welcome, have a nice day.