Hi.
user
Hello.
assistant
I am Margaret Brown.
user
How can I help you Margaret Brown?
assistant
I want to attend the Brooklyn folk festival at New York, please book a flight ticket for me.
user
Sure, can you provide your journey dates please/.
assistant
I will go on 03/04 and return on 03/06.
user
May I know your airport codes?
assistant
My source and destination airport codes are  PHX and LGA.
user
Wait a moment please.
assistant
Ok.
user
Sorry to say, there is no flight available on your preferable dates.
assistant
Ok, no problem.
user
Thank you for contacting us.
assistant
Thank you.
user