You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Washington, ID - DCA to visit national Zoological park.

ASSISTANT: Sure, kindly mention your travel dates?

USER: So, I need your help in booking my flight ticket on 12/26. I intend to return on 12/28.

ASSISTANT: May I know your origin airport code?

USER: New York, NY - LGA is my origin point.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flight found with your requirement.

USER: Ok,. Thank you for sharing the information.

ASSISTANT: May I know your name?

USER: I am Kenneth Hernandez.

ASSISTANT: Thanks for reaching us, have a good day.