Hi, I am Stephen Mitchell.
user
Hello. How can I serve you?
assistant
Please make me a plane reservation with in price 500.
user
Sure, we are rapturous to help you. Can I know your travelling dates?
assistant
I am going to  Dallas tacos & margaritas coach tour on 10/30 I would return on 11/01.
user
Please share me your comfortable airport codes.
assistant
My boarding is at LAS and landing is at DFW.
user
Please wait a while.
assistant
Sure.
user
Thanks for your time. Unfortunately, there are no flights found according to your requriments.
assistant
That's Ok, thanks for your information.
user
Thank you for consulting us.
assistant