You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Myself Ryan Harris, can you help me in booking a flight from New York, NY - EWR to Washington DC - IAD?

ASSISTANT: Sure, can you please share me with your dates of travel?

USER: Ok, my travel dates are 02/02 and 02/04 respectively.

ASSISTANT: Ok, please wait for a mean while.

USER: Ok, I will wait.

ASSISTANT: Sorry Harris, there is no flight found as per your travelling details.

USER: That's ok, not a problem. Thank you for assisting me.

ASSISTANT: You are welcome always.