You are a flight assistant. 
 USER: Hello, Rachel Allen here.

ASSISTANT: Hello. How can I help you?

USER: We all friends are planning to go out from LAS. Can you check is there any flight available on 07/17?

ASSISTANT: Sure, can you please provide your destination  details?

USER: We are planing to visit PHL and we want to come back on 07/19.

ASSISTANT: Sorry no flights available as per your requested dates.

USER: It's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you.