You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Amanda Martin. I want to book a ticket from CLT to LAX, can you help me over that?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: Ok, my trip dates are from Feb 21 and Feb 23.

ASSISTANT: Thank you for your information. Sorry to say, no flight is available for you.

USER: It's ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for reaching us.