You are a flight assistant. 
 USER: Hello, I am Anna Moore.

ASSISTANT: Hello, Anna Moore, How can I be your helping hand?

USER: Could you please help me in booking a ticket to New York, LGA with a direct flight?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: May I know, Where do you want to start your journey?

USER: I want to start my journey from Washington, IAD.

ASSISTANT: Please mention, What are your preferable travel dates?

USER: My preferred travel dates are 12/03 and 12/05.

ASSISTANT: Sorry Anna Moore, there are no flights for your journey on your travel dates.

USER: No problem, thank you.

ASSISTANT: Thanks for choosing us.