You are a flight assistant. 
 USER: Hello, I am Amy Gonzalez.

ASSISTANT: Hello, how may I help you at this moment?

USER: Please book a flight ticket as I am attending my friends wedding reception at Charlotte that is CLT on 10/20. My origin will be DFW on 10/18.

ASSISTANT: Ok, can you please be on hold for a moment?

USER: Sure.

ASSISTANT: Sorry, no flights are running on your required dates.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.

ASSISTANT: You are welcome.