You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Raymond Evans.

ASSISTANT: How can I aid you today?

USER: Can you please book a flight ticket from LGA to IAD? As I need to attend a cultural event in Washington.

ASSISTANT: Sure, I can aid you in booking flight ticket.

USER: Thank you.

ASSISTANT: Could you please let me know your travel dates for booking flight ticket?

USER: Sure, I need to travel on dates of 02/09 and 02/11.

ASSISTANT: Please hold on a moment, I will check flight availability.

USER: Sure, take your time to check.

ASSISTANT: Thank you for waiting.

USER: It's ok.

ASSISTANT: Sorry no flights available in this route as per your requested dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us, have a nice day.