You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to search a flight from Charlotte, NC-CLT?

ASSISTANT: May I know your travelling dates please?

USER: The travelling dates are 08/09 to 08/11.

ASSISTANT: May I know your destination airport code please?

USER: Sure, the destination airport code is WA-SEA.

ASSISTANT: May I know your name please?

USER: Sure, my name is Samantha Perez.

ASSISTANT: I am sorry sorry no flights available on your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.