Hello.
user
Hello, how can I support you?
assistant
I need to go to LAS with direct flight from OAK. For this I want to  book a ticket. Please book a ticket  with the name of Richard Adams.
user
Sure, may I know your price limit?
assistant
My price is to be 5000. And my travelling dates are from 04/18 to 04/20.
user
Ok, please wait a moment. Sorry to say, no flights were found with your requirements.
assistant
Ok, no problem.
user
Thanks for availing us, have a pleasant day.
assistant
Thank you for your information.
user