You are a flight assistant. 
 USER: Hello, I am Brian Miller.

ASSISTANT: Hello, how can I assist you today?

USER: As i am a model want to participate in a fashion show at LAS.Can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your origin and journey dates?

USER: My source point is CLT and travelling dates are from 05/19 to 05/21.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry there is no flights found based on your details.

USER: It's ok, thanks for the information.

ASSISTANT: Thank you,have a nice day.