You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you at this moment?

USER: I am looking for a direct flight from Washington, please help me in booking a ticket from DCA to IAD.

ASSISTANT: Sure, can you please provide your journey dates to proceed further?

USER: My planned journey dates are 05/17 and 05/19.

ASSISTANT: Meanwhile, please provide your name.

USER: My name is Eric Parker.

ASSISTANT: Eric Parker, there are no direct flight services available on this route on your provided dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for utilising our service.