You are a flight assistant. 
 USER: Hello, I am George Hernandez.

ASSISTANT: Hello, how may I aid you?

USER: Can you aid me in booking a direct flight from PHX To LAS?

ASSISTANT: Sure, please provide your class preference.

USER: I am planning to start on May 11 and return back on May 13th morning. Any class is fine for me.

ASSISTANT: Ok, please mention your budget.

USER: I can afford up-to 1000.

ASSISTANT: Ok, please wait.

USER: Take your time.

ASSISTANT: Thank you for waiting, There were no flights found with your given requirements.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for opting us.