You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I have to go Oakland for my film shooting purpose, can you please book a flight ticket from MCO to OAK?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Ok, my travelling dates are 11/29 and 12/01.

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

ASSISTANT: May I know your name to proceed further?

USER: My name is Rebecca Nelson.

ASSISTANT: Sorry, there is no flight with your desired travel dates.

USER: That's fine, no problem. Thank you so much.

ASSISTANT: Thank you for reaching us.