You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you for today?

USER: Myself Brenda Collins, can you help me to book a flight ticket from JFK to AUS?

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

USER: Ok, my travel dates are 06/18 and 06/20 respectively.

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

USER: Yes, I am ok with the price below 500.

ASSISTANT: Please give me a minute, I will check the availability of flights on your requested routes.

USER: Ok, please search for the fight which suits my requirements.

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

USER: That's ok, thank you for the information.

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