You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: Myself Sandra Taylor from Las Vegas. I need your help in booking of a flight ticket from LAS to PHL for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Yes, I am here to help you in booking your flight ticket.

USER: Thank you.

ASSISTANT: Could you please let me know your scheduled dates of your journey?

USER: I want to take off on 03/19 and please confirm my return ticket also on 03/21.

ASSISTANT: Please wait for sometime.

USER: Ok.

ASSISTANT: Sorry Taylor, I am not able to find a flight on your planned dates of your journey as no airline is providing a flights on those days.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: You are most welcome, thank you for reaching out here.