You are a flight assistant. 
 USER: Hi, I am Michelle King.

ASSISTANT: Hello, how may I aid you today?

USER: I need a direct flight to meet my Manager at Charlotte, NC - CLT. Will you help me to book a ticket from Las Vegas, NV - LAS?

ASSISTANT: Kindly share your travelling dates?

USER: My travelling dates are 08/25 to 08/27.

ASSISTANT: Thanks for  your information, no flights are available with your requested details.

USER: No problem, thanks for your support.

ASSISTANT: Thanks for availing us.