You are a flight assistant. 
 USER: Hello, my name is Raymond White.

ASSISTANT: Hello Raymond. How may I aid you?

USER: I am planning to book a  flight ticket to LAX from LAX, can you please help me out?

ASSISTANT: Sure, tell me your travel dates please?

USER: Sure, my trip dates are 09/29 and 10/01.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you.