You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am George Young.

ASSISTANT: How can I assist you?

USER: I am planning to visit Las Vegas, can you please book me a ticket from ATL to LAS?

ASSISTANT: Sure, I will help you. Could you please let me know your travel dates?

USER: My preferable journey dates are from 07/17 to 07/19.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry Young, there are no flights available on your preferred dates.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: You are welcome and thank you for choosing us.