You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: Can you make a reservation for me to travel to NY-EWR?

ASSISTANT: Sure, may I know your source airport code?

USER: I am Brian Martin from DC-DCA.

ASSISTANT: Ok, can you please share your preferable travelling dates?

USER: My travel dates are 07/02 and 07/04.

ASSISTANT: Martin, no flights found as per your requested travelling dates.

USER: It's ok. Thanks for your valuable information.

ASSISTANT: Thank you for approaching us.