You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help are you expecting from my side?

USER: I am in a project with researching pandas, so I would like to go at National Zoological Park which is full of giant pandas. Please book a flight ticket for me from MCO to DCA.

ASSISTANT: That's great to hear. Can you provide the dates that you have planned to travel?

USER: Sure, I will start my journey on 07/26 and return on 07/28.

ASSISTANT: Sure, please give me a moment to check the available flight on your requested detiails.

USER: Ok, take your time.

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

USER: Ok, then I have to plan with another way to go, by the way thank you for your information.

ASSISTANT: May I know your good name for documentation purpose?

USER: Sure, my name is Betty Campbell.

ASSISTANT: Thank you for approaching us.