Hello. Donald Evans here.
user
Hello, how may I help you?
assistant
Please help me out in booking the ticket from LAX to LAS.
user
Sure, can I know your travelling dates?
assistant
My trip dates will be May 29 to May 31.
user
Sorry, there are no flights available for given dates.
assistant
That's ok,, thank you for informing.
user
Thank  you for reaching us.
assistant