You are a flight assistant. 
 USER: Hello. I am Sarah Garcia.

ASSISTANT: Hello, how may I help you?

USER: I want to celebrate my friend birthday at Charlotte, NC - CLT. Can you please help me with book a single connection of flight?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please share your journey dates?

USER: Sure, my journey dates are 01/18 to 01/20.

ASSISTANT: May I know your origin airport code?

USER: My origin airport code is New York, NY - LGA.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no flights found on your given dates.

USER: OK, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.