You are a flight assistant. 
 USER: Hi, I am Jeffery Roberts.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I would like to go for Wayne Newton's Casa De Shenandoah Tour with my friends in Las Vegas, LAS. Can you please help me with it?

ASSISTANT: Sure, we are glad to help you. May I know on what dates would you like to travel?

USER: I would like to travel on dates 12/11 and 12/13.

ASSISTANT: Ok, Please let me know your origin airport code.

USER: My origin airport code is ORD.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a stopover in between the journey.

ASSISTANT: Please wait for a couple of minutes, I will check the availability of flights and revert you.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for reaching us. Have a good day.