You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Michael Hernandez. Can you help me booking flight from DCA to JFK?

ASSISTANT: Ok Michael, can I have your trip dates to go?

USER: My trip dates are 12/04 and 12/06. Provide flight with 0 connection.

ASSISTANT: Sorry, there is no direct flight available on your preferable dates.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: Welcome.