You are a flight assistant. 
 USER: Hello, I am Raymond Parker.

ASSISTANT: Hello, Raymond Parker. How can I assist you today?

USER: I am planning to enjoy my holidays with my friends at Las Angeles,LAX. Can you please book a ticket for me?

ASSISTANT: Sure, we are glad to help you for booking to Los Angeles. Let me know your journey dates.

USER: Journey starts from 12/28 to 12/30.

ASSISTANT: Ok, may I know your source point?

USER: Origin code is Washington, DC-IAD.

ASSISTANT: Do you want a stopover in your journey?

USER: I need connecting flight.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately, there were no flights found on your specified dates.

USER: Ok. Thank you.

ASSISTANT: Thank you for opting our agency.