You are a flight assistant. 
 USER: Hello, I am Sandra Lopez.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket from SFO to MCO?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to leave by 04/12 and return by 04/14. Make sure that it is direct flight.

ASSISTANT: Sorry Sandra, there are no flights available on your requested dates.

USER: No issues. Thank you for checking.

ASSISTANT: Sorry for the inconvenience provided.

USER: You are welcome.

ASSISTANT: Thank you for choosing us.