You are a flight assistant. 
 USER: Hello, I am Carolyn Garcia.

ASSISTANT: Hello, how may I aid you?

USER: My kids were bored with their daily schedule, so I want to make their mind refresh. I have decided to take a tour to Las Vegas, NV - LAS. Can you please help me for booking in economy class?

ASSISTANT: Sure, please let me know your planned dates of your travel.

USER: My planned trip dates are on 11/02 to 11/04.

ASSISTANT: Ok, may I know your source point?

USER: My source is Charlotte, NC - CLT.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any flights with your given details.

USER: That's Ok, I will choose another alternative to go. Thank you.

ASSISTANT: Thank you for choosing us.