You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I am Raymond Mitchell. Ok, can I know if there is a flight from IAD to CLT?

ASSISTANT: Sure Raymond Mitchell, can I have your travel dates please?

USER: Ok, my travel dates are 12/16 and 12/18 respectively.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait with for the response.

ASSISTANT: Sorry Raymond Mitchell, no flight is available to you on your dates.

USER: That's ok, not a problem. Thank you the information.

ASSISTANT: Thank you for choosing us, have a good day.