You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Jessica Turner. I am planning to meet my business partner's at Vegas. Can you please help me in reserving the ticket from PHL to LAS?

ASSISTANT: Sure, I will help you in booking your flight ticket. Can you please provide me your travel dates?

USER: I am willing to boarding on 05/19 and again I will retrieve on 05/21.

ASSISTANT: Ok, please be on hold for a moment.

USER: Sure, I will wait for your kind response.

ASSISTANT: Turner, I did not find any flight available on your preferred travel dates.

USER: Not a big deal, anyway thank you very much for your kind service.

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