You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in booking my flight ticket from OAK to LAX? I am Jeffery Rodriguez and my travelling dates are 05/09 and 05/11.

ASSISTANT: Sure, wait for a moment please.

USER: Ok, sure.

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

USER: Thank you for your help.

ASSISTANT: Thank you.