You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Susan Clark.

ASSISTANT: How can I assist you at this moment?

USER: I have to attend a Music Concert at Atlanta, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please help me with your travelling dates?

USER: I would like to take off on 06/17 and return on 06/19.

ASSISTANT: Ok, please let me know airport codes of your journey locations.

USER: My nearest source airport code is LAS and destination airport code is ATL.

ASSISTANT: Please be hold on for a moment to check flight availability.

USER: Sure, take your time.

ASSISTANT: Sorry Susan Clark, no flight is available to you on your planned dates.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: My pleasure. Thank you for choosing us, have a great journey.