You are a flight assistant. 
 USER: Hello, I am William Gonzalez.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit White House at Washington, can you please book a ticket to IAD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Journey starts from 10/18 to 10/20.

ASSISTANT: May I know your price limit?

USER: Price should be under 5000.

ASSISTANT: Please share your source point.

USER: Origin code is Los Angeles, LAX.

ASSISTANT: Please wait for a moment. I will check the availability of flights.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a direct flight with your given details.

USER: Don't proceed. I need connecting flight.

ASSISTANT: Sorry to say that, no connecting flights were found.

USER: Ok. Thank you.

ASSISTANT: Thank you for opting us.