You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help are you expecting from our service?

USER: Myself Jason Nelson. I want to go Mint Museum it is in Charlotte, Can you please find is there any flight to CLT on 08/16?

ASSISTANT: Sure, can you provide the source airport code and return date?

USER: My origin airport code is ORD. Please book my return ticket also on 08/18.

ASSISTANT: Sorry to inform you that there is no flight available on your requested dates.

USER: Oh it's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us. Have a great day.