You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Please reserve a seat for me in a flight from MCO to OAK.

ASSISTANT: Sure, can you please let me know your dates of journey?

USER: Ok, my travelling dates are from Aug 08 to 10.

ASSISTANT: May I know your name please?

USER: Sure, I am Emily Johnson.

ASSISTANT: Do you have any other specifications please?

USER: I need a direct flight.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Johnson, there is no flight found as per your travelling details.

USER: It's ok, thanks for your information.

ASSISTANT: You are welcome.