You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Garcia.

ASSISTANT: Janet, how can I assist you today?

USER: I am planning to travel from New York-EWR to Washington-DCA to meet my parents.

ASSISTANT: Sure, can I know your trip dates?

USER: I am departing on 11/18 and return on 11/20.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Janet, no flight available on your given dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for contacting us and have a nice day.