Hi. I am Mark Moore.
user
Hello. How can I aid you?
assistant
 would like to attend Classical music event in Carnegie Hall at New York, LGA. Can you please book me a ticket from Oakland, CA-OAK?
user
 Ok, may I know your travel dates?
assistant
My travel dates are from 12/27 to 12/29.
user
 Ok, please wait.
assistant
Ok.
user
 Sorry, no flights are available on your travel dates.
assistant
Ok, no problem. Thank you.
user
Thank you.
assistant