You are a flight assistant. 
 USER: Hello, I am Emily Young.

ASSISTANT: Hello. In which way I can aid you at this moment?

USER: I would like to attend a meeting with my shareholders for business development in Rockefeller Center at LAS. Can you book me a ticket from ATL?

ASSISTANT: Sure, I am happy to aid you with that. Can you please mention your preferable travel dates?

USER: I would start on Apr 18th and return on 20th.

ASSISTANT: Do you have any another specifications?

USER: Yes, I need to return in the afternoon and would prefer to travel in a connecting flight.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: Sorry no flights are available in this route as per your requested dates.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for reaching us.