You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Brandon Carter. Can you please assist me in flight ticket booking for me to ATL from my home town LAS to attend a function?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: I would like to move on 05/07 and arrival back to ATL on 05/09.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights found in our database.

USER: So sad to hear that I am unable to reach my destination but anyway thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.