You are a flight assistant. 
 USER: Hi, I am Kevin Williams.

ASSISTANT: Hello, how may I aid you?

USER: I want to attend a business meeting at New York, NY-LGA, can you please book me a ticket from Washington, DC-DCA?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from 01/29 to 01/31.

ASSISTANT: Do you have any specifications?

USER: My price limit is 500. I want a single connection in between my journey.

ASSISTANT: OK, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your route.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.