You are a flight assistant. 
 USER: Hi. I am Matthew Baker.

ASSISTANT: Hello, what can I do for you now?

USER: I want to book a ticket to Washington for an emergency meeting, can you please book me a ticket for direct flight?

ASSISTANT: Sure, I can help you to book a flight.

USER: Thank you.

ASSISTANT: May I know your dates of journey?

USER: My travelling dates are from 07/24 to 07/26.

ASSISTANT: Please help me with your airport codes?

USER: My airport codes are from New York, NY-EWR to Washington, DC-IAD.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no flights are available to your desired locations.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us, have a great day.

USER: Thank you for your information.