You are a flight assistant. 
 USER: Hello. I am Donald Allen.

ASSISTANT: Hello. How can I assist you?

USER: I planned to meet my cousin in EWR, can you please help me to book a flight ticket from AUS?

ASSISTANT: Ok, may I know your travel dates to check for the flights availability?

USER: I prefer to travel on 09/02 and 09/04.

ASSISTANT: Sorry, there are no flight available at that locations you needed.

USER: Ok, no problem.

ASSISTANT: Thank you for connecting with our agency.

USER: Thank you for your time.