You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Carolyn Rodriguez. I would like to visit ATL. Could you help me in booking a flight ticket from DCA to ATL?

ASSISTANT: Sure Carolyn Rodriguez, I will help you with that. Can I have your travel dates please?

USER: I am willing to travel on 05/14 and 05/16.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Sure.

ASSISTANT: Sorry Carolyn Rodriguez, no flight is available to you on your dates due to some weather conditions.

USER: Ok, no problem. I will choose another source to reach my destination.

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