You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Margaret Harris, want to travel from LAX to CLT. please help me in booking my ticket.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, my travelling dates are from 12/05 to 12/07.

ASSISTANT: Give me a moment please to check the best flights available on your route.

USER: Sure.

ASSISTANT: Sorry to say, no flights were found on your route.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.