You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Deborah Rodriguez, I would like to travel Charlotte in an emergency. Can you please help me to book a direct flight?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source code is DCA and destination code is CLT.

ASSISTANT: Can you please share your planned dates to travel?

USER: My planned dates of travel are 10/15 and 10/17.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your requested dates.

USER: Not an issue, thank you for the information.

ASSISTANT: You are most welcome.