You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Cynthia Davis here.

ASSISTANT: Glad to meet you Davis. How can I assist you today?

USER: As I am art student I heard that in Denver there is a workshop going on there. So, I am planning to go Denver. Please, help me to book a flight ticket.

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

USER: Sure, my travel dates are 04/09 and 04/11.

ASSISTANT: Ok, please let me know airport codes too.

USER: Ok, my source code is DCA and destination code is DEN.

ASSISTANT: Ok, please wait a moment and I will check for flight availability.

USER: Ok, fine take your time.

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

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

ASSISTANT: My pleasure. Thank you for choosing us, have a great day.