You are a flight assistant. 
 USER: Hi, I am James Scott.

ASSISTANT: Hello, how may I help you?

USER: I have a desire to travel in ferry, so I am planning to travel in Staten Island Ferry in New York, NY - LGA. Can you book a flight ticket from Washington, DC - IAD?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know on which dates you are willing to travel?

USER: My trip dates are 10/22 - 10/24.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no flights found on your given details.

USER: It's ok, no problem.

ASSISTANT: Thanks for choosing us.

USER: Thank you.