You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Katherine Hernandez. I am a scientist and I have to do some research on articles to write a book, so can you assist me to book a flight ticket to MCO from my region DCA?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Thank you and my dates are 11/18 and back on 11/20.

ASSISTANT: Sorry, here I didn't  find any flights in your route.

USER: Ok, that's fine, when there is a new dates then I can reach you again,. Thank you for your help.

ASSISTANT: Thank you for reaching us.