You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I render you today?

USER: As I am a scientist, I want to attend science festival with my students at New York.

ASSISTANT: Ok.

USER: Can you do the reservation?

ASSISTANT: Sure, we are here to aid you. To proceed with further booking I need your  airport codes.

USER: My airport codes are DCA-EWR.

ASSISTANT: When did you schedule your trip?

USER: Dates are 02/04 and 02/06.

ASSISTANT: Do you want any connecting flight or direct flight?

USER: I need break in my journey. Price limit is 200.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no connecting flight found to your route.

USER: No problem, Thanks for the information.

ASSISTANT: May I know your name for documentation purpose?

USER: Justin Hernandez here.

ASSISTANT: Thank you for availing us, have a nice day.